JP2012189518A - Retrograde display mechanism and watch equipped with the same - Google Patents

Retrograde display mechanism and watch equipped with the same Download PDF

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JP2012189518A
JP2012189518A JP2011054884A JP2011054884A JP2012189518A JP 2012189518 A JP2012189518 A JP 2012189518A JP 2011054884 A JP2011054884 A JP 2011054884A JP 2011054884 A JP2011054884 A JP 2011054884A JP 2012189518 A JP2012189518 A JP 2012189518A
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day
wheel
date
jumper
fan
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JP5715453B2 (en
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Kei Hirano
圭 平野
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Seiko Instruments Inc
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Seiko Instruments Inc
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Priority to CN201210064108.8A priority patent/CN102681423B/en
Priority to CH00350/12A priority patent/CH705041B1/en
Priority to US13/417,431 priority patent/US8724430B2/en
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    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G—PHYSICS
    • G04—HOROLOGY
    • G04B—MECHANICALLY-DRIVEN CLOCKS OR WATCHES; MECHANICAL PARTS OF CLOCKS OR WATCHES IN GENERAL; TIME PIECES USING THE POSITION OF THE SUN, MOON OR STARS
    • G04B19/00—Indicating the time by visual means
    • G04B19/24—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars
    • G04B19/243—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator
    • G04B19/247—Clocks or watches with date or week-day indicators, i.e. calendar clocks or watches; Clockwork calendars characterised by the shape of the date indicator disc-shaped
    • G04B19/253—Driving or releasing mechanisms

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Electromechanical Clocks (AREA)

Abstract

PROBLEM TO BE SOLVED: To provide a retrograde display mechanism capable of minimizing positional deviation of display and a watch equipped with the same.SOLUTION: A retrograde display mechanism 1 of a watch 7 comprises: a time value turning wheel 70 provided with a time value turning claw 72 for the time value consisting of days or weeks and rotated once a day; a time value transfer wheel 20 provided with a time value transfer gear 24 rotated by an amount of one tooth a day by the time value turning claw and with a drive cam 30; a fan-like wheel actuation lever 60 provided with a cam follower 61 engaged with the drive cam and a fan-like wheel actuation gear 64; and a fan-like wheel 40 provided with a fan-like wheel gear 41 engaged with the fan-like wheel actuation gear and rotated according to oscillation of the fan-like wheel actuation lever and with a fan-like wheel display part 42. Moreover, the retrograde display mechanism 1 includes: a retrograde display mechanism body which returns to an initial position by the fan-like wheel 40 rapidly reversed each time a month-end or a weekend passes; a fan-like wheel jumper 50 which makes the fan-like wheel gear jump and stop; and regulation release means 27 which releases a regulation by the fan-like wheel jumper 50 each time a month-end or a weekend passes.

Description

本発明は、レトログラード表示機構及びこれを備えた時計に係る。   The present invention relates to a retrograde display mechanism and a timepiece including the same.

時計において、レトログラード表示機構は、大きい文字で日付表示を行う方式（以下では、「ビッグデイト」式という）の１０の位（桁）の日付表示を扇形ないし扇様の表示部材によって表示する場合や、扇形ないし扇様の表示領域において小さな針（以下では、「小曜針」という）を扇に沿って回動させる場合に、用いられている。（特許文献１や特許文献２）   In a watch, the retrograde display mechanism displays the date in the 10th place (digit) of a method of displaying the date with large characters (hereinafter referred to as “big date” type) by a fan-shaped or fan-like display member. It is used when a small hand (hereinafter referred to as “small day hand”) is rotated along a fan in a fan-shaped or fan-like display area. (Patent Document 1 and Patent Document 2)

このレトログラード表示機構においては、扇形ないし扇様の部材を一方向に少しずつ回動させた後、月末から月初に移るときや週末から週初に移るときに扇形ないし扇様の部材を逆方向に素早く回動させて初期位置に戻す。そのために、レトログラード表示機構では、全体としてみると渦巻の如く一方の回動方向に沿って径が増すカム面を有し渦巻きの最大径部から最小径部に落ちる遷移面を備えた駆動カムや、一端側のカム従節で駆動カムに弾性的に押付けられ他端側の係合部で扇形ないし扇様の部材を一方向に少しずつ回動させるように扇形ないし扇様の部材の被係合部に係合した作動レバーを備える。この場合、作動レバーはカム面の位置を拡大して扇形ないし扇様の部材の被係合部に伝えることになる。   In this retrograde display mechanism, the fan-shaped or fan-shaped member is rotated little by little in one direction, and then the fan-shaped or fan-shaped member is reversed when moving from the end of the month to the beginning of the month or from the weekend to the beginning of the week. Turn quickly to return to the initial position. Therefore, the retrograde display mechanism as a whole has a cam surface that increases in diameter along one rotational direction like a spiral and has a drive cam that has a transition surface that falls from the maximum diameter portion to the minimum diameter portion of the spiral. The engagement of the fan-shaped or fan-like member is elastically pressed against the drive cam by the cam follower at one end and the fan-shaped or fan-like member is rotated little by little in one direction at the engaging portion at the other end. An operating lever engaged with the joint is provided. In this case, the operating lever expands the position of the cam surface and transmits it to the engaged portion of the fan-shaped or fan-like member.

しかしながら、コスト上、カム面の精度には限度があることから、カム面の適正位置からのズレに応じて、扇形ないし扇様の部材の位置がズレ、ビッグデイト式の日付の位置や小曜針の位置がずれて見にくかったり製品の見た目（外観）の高級感等を損なわれたりする虞れがある。   However, since the accuracy of the cam surface is limited due to cost, the position of the fan-shaped or fan-shaped member is shifted, the position of the big date type date or small day according to the deviation from the appropriate position of the cam surface. There is a possibility that the position of the needle is shifted and it is difficult to see or the high-quality feeling of the appearance (appearance) of the product is impaired.

特開２００７−２１８８５６号公報JP 2007-218856 A 特開２００６−１７０７６４号公報（図１９，図２０，図５等）Japanese Patent Laying-Open No. 2006-170764 (FIGS. 19, 20, 5, etc.)

本発明は、前記した点に鑑みなされたものであって、その目的とするところは、表示の位置ズレが最低限に抑えられ得るレトログラード表示機構及びこれを備えた時計を提供することにある。   The present invention has been made in view of the above points, and an object of the present invention is to provide a retrograde display mechanism and a timepiece equipped with the retrograde display mechanism that can minimize the display displacement.

本発明のレトログラード表示機構は、前記目的を達成すべく、日又は曜からなる時値について該時値を進める時値回し歯車及び時値回し爪を備え一日に一回転される時値回し車と、該時値回し車の時値回し爪によって一日に一歯分だけ回転される時値伝え歯車部及び駆動カム部を備えた時値伝え車と、時値伝え車の駆動カム部に弾性的に押付けられて該駆動カム部と係合するカム従節部および扇様車作動歯車部を備えた扇様車作動レバーと、該扇様車作動レバーの扇様車作動歯車部に噛合し該扇様車作動レバーの揺動に応じて回転される扇様車歯車部及び扇様車表示部を備えた扇様車とを有し、月末又は週末を過ぎる毎に該扇様車が逆向きに急転されて初期位置に戻るように構成されたレトログラード表示機構本体と、扇様車の扇様車歯車部を躍制する扇様車ジャンパと、月末又は週末を過ぎる毎に、扇様車ジャンパによる規正を解除する規正解除手段とを有する。   The retrograde display mechanism of the present invention includes a hour-counting wheel and a hour-counting claw for advancing the hour value with respect to an hour value consisting of a day or a day to achieve the above-mentioned object. A time value transmission wheel provided with a time value transmission gear portion and a drive cam portion rotated by one tooth per day by the time value rotation claw of the hour value rotation wheel, and a drive cam portion of the time value transmission wheel A fan-like vehicle operating lever having a cam follower portion and a fan-like vehicle operating gear portion that are elastically pressed to engage with the drive cam portion, and meshed with the fan-like vehicle operating gear portion of the fan-like vehicle operating lever And a fan wheel provided with a fan wheel gear portion and a fan wheel display portion rotated according to the swing of the fan wheel operating lever, and the fan wheel is Retrograde display mechanism main body configured to rotate suddenly in the reverse direction and return to the initial position, and the fan-shaped wheel gear section of the fan-shaped car And the fan-like jumper to win thermocline, every past the end of the month or the weekend, and a regulating canceling means for canceling the train wheel setting by the fan-like jumper.

本発明のレトログラード表示機構では、レトログラード表示機構本体に加えて、「扇様車の扇様車歯車部を躍制する扇様車ジャンパ」が設けられているので、扇様車ジャンパが扇様車の扇様車歯車部を所定の回転位置で正確に規正し得るから、駆動カム部のカム面の精度に限度があっても、扇様車表示部が正確な位置において表示精度が高められた状態で日又は曜からなる時値を表示し得る。従って、位置がずれて見にくかったり製品の見た目（外観）の高級感等を損なったりする虞れがない。   In the retrograde display mechanism of the present invention, in addition to the retrograde display mechanism main body, a "fan-like car jumper that controls the fan-like gear part of the fan-like car" is provided. Because the fan wheel gear can be accurately regulated at a predetermined rotational position, even if there is a limit to the accuracy of the cam surface of the drive cam, the fan wheel display has improved display accuracy at the correct position. A time value consisting of a day or a day of the week may be displayed. Therefore, there is no possibility that the position is shifted and it is difficult to see, or that the appearance (appearance) of the product is detrimental.

ここで、駆動カム部のカム面は、典型的には、扇様車作動レバーを最終的な変位位置よりも僅かに手前の暫定位置まで変位させるように構成され、暫定位置から最終的な変位位置への変位は扇様車ジャンパにより行われる。但し、暫定位置から最終的な変位位置への変位が扇様車ジャンパにより行われ得る限り、所望ならば、駆動カム部のカム面が、扇様車作動レバーを最終的な変位位置よりも僅かに先の暫定位置まで変位させるようになっていてもよい。   Here, the cam surface of the drive cam portion is typically configured to displace the fan-wheel actuating lever to a temporary position slightly before the final displacement position, and the final displacement from the temporary position. The displacement to the position is performed by a fan jumper. However, as long as the displacement from the provisional position to the final displacement position can be performed by the fan-shaped car jumper, if desired, the cam surface of the drive cam unit slightly moves the fan-shaped car operating lever from the final displacement position. It may be arranged to be displaced to the previous provisional position.

また、本発明のレトログラード表示機構では、レトログラード表示機構本体及び扇様車ジャンパに加えて、「月末又は週末を過ぎる毎に、扇様車ジャンパによる規正を解除する規正解除手段」が設けられているので、扇様車ジャンパによって扇様車の扇様車歯車部を規正するにもかかわらず、月末又は週末を過ぎる毎に規正解除手段によって扇様車ジャンパによる規正が解除されるから、「月末又は週末を過ぎる毎に該扇様車が逆向きに急転されて初期位置に戻る」レトログラード表示動作がジャンパにより妨げられることもない。   In addition, in the retrograde display mechanism of the present invention, in addition to the retrograde display mechanism main body and the fan-like car jumper, “the regulation releasing means for releasing the regulation by the fan-like car jumper at the end of the month or the weekend” is provided. So, even though the fan wheel gear part of the fan car is regulated by the fan car jumper, the regulation by the fan car jumper is canceled by the regulation canceling means every time the end of the month or weekend is passed. The retrograde display operation is not hindered by the jumper as the fan wheel suddenly reverses and returns to the initial position every weekend.

すなわち、本発明のレトログラード表示機構では、レトログラード表示機構本体に加えて「扇様車の扇様車歯車部を躍制する扇様車ジャンパと、月末又は週末を過ぎる毎に、扇様車ジャンパによる規正を解除する規正解除手段と」が設けられているので、扇様表示により狭い領域で大きな表示をするというレトログラード表示機構による表示の利点の享受と、従来のレトログラード表示機構に不可避的に付随していた表示位置のズレの問題の解消（レトログラード表示の短所の解消）とが同時に実現され得る。   In other words, in the retrograde display mechanism of the present invention, in addition to the retrograde display mechanism main body, the fan-like car jumper that controls the fan-like gear part of the fan-like car, and the fan-like car jumper at the end of the month or every weekend. `` Registration canceling means for canceling the regulation '' is provided, so that the retrograde display mechanism can enjoy the advantage of displaying large images in a narrow area by fan-like display, and it is unavoidably associated with the conventional retrograde display mechanism. It is possible to simultaneously solve the problem of misalignment of the display position (resolving the disadvantages of retrograde display).

本発明の一つの典型的なレトログラード表示機構では、前記時値が日からなり、前記時値回し車が日回し車からなり、前記時値伝え車が１の位（桁）の日付を表示する第一日板部を備えた第一日車からなり、前記扇様車作動レバーが第二日車作動レバーからなり、前記扇様車が１０の位を表示する第二日車からなり、前記扇様車歯車部が第二日表示車からなり、前記扇様車ジャンパが第二日ジャンパからなり、日回し歯車及び日回し爪を備え一日に一回転される日回し車と、該日回し車の日回し爪によって一日に一歯分だけ回転される第一日車歯車部及び駆動カム部を備えた第一日車と、第一日車の駆動カム部に弾性的に押付けられて該駆動カム部と係合するカム従節部および第二日車作動歯車部を備えた第二日車作動レバーと、該第二日車作動レバーの第二日車作動歯車部に噛合し該作動レバーの揺動に応じて回転される第二日表示車及び第二日板部を備えた第二日車とを有し、月末を過ぎる毎に該第二日車が逆向きに急転されて初期位置に戻るように構成されたレトログラード表示機構本体と、第二日車の第二日表示車を躍制する第二日ジャンパと、月末を過ぎる毎に、第二日ジャンパによる規正を解除する規正解除手段とを有する。   In one typical retrograde display mechanism of the present invention, the hour value is composed of a day, the hour value wheel is composed of a date wheel, and the hour value transmitting wheel displays a date of one's place (digit). The first date wheel provided with a first date plate portion, the fan wheel operation lever is a second date wheel operation lever, the fan wheel is a second date wheel displaying the place of the tenth, The fan wheel gear portion is a second date indicator wheel, the fan wheel jumper is a second date jumper, and includes a date indicator wheel and a date indicator that rotates once a day. The first date indicator provided with the first date indicator gear portion and the drive cam portion rotated by one tooth per day by the date indicator of the turning wheel, and elastically pressed against the drive cam portion of the first date indicator. A second date indicator operating lever having a cam follower portion and a second date indicator operating gear portion engaged with the drive cam portion, and the second date indicator A second date indicator wheel that meshes with the second date indicator operating gear portion of the moving lever and rotates according to the swing of the operating lever, and a second date indicator provided with a second date plate portion. A retrograde display mechanism body configured such that each time the second date wheel is suddenly rotated in the opposite direction and returned to the initial position each time, a second date jumper that controls the second date display vehicle of the second date wheel, Each time the end of the month is passed, there is a regulation canceling means for canceling regulation by the second day jumper.

その場合、レトログラード表示機構は、ビッグデイトの１０の位（桁）の日付を表示し、月末から月初に移る際に、表示が初期位置に戻るレトログラード表示を行う。このビッグデイト式のレトログラード表示機構においても、扇様車ジャンパとしての第二日ジャンパが第二日表示車を正確な位置で規正して１０の位（桁）の日付を正確な位置で表示させる。従って、位置がずれて見にくかったり製品の見た目（外観）の高級感等を損なったりすることがない。また、このレトログラード表示機構においても、規正解除手段が月末を過ぎる毎に（月末から月初に入る際に）、第二日ジャンパによる規正を解除するので、月末を過ぎる毎に初期位置に戻る所定のレトログラード動作が妨げられることがない。   In that case, the retrograde display mechanism displays the date of the 10th place (digit) of the big date, and performs the retrograde display in which the display returns to the initial position when the month moves from the end of the month to the beginning of the month. Also in this big date type retrograde display mechanism, the second day jumper as a fan jumper regulates the second day display vehicle at the correct position and displays the date of the tenth place (digit) at the correct position. . Therefore, it is not difficult to see due to the shift of position, and the high-quality feeling of the appearance (appearance) of the product is not impaired. Also in this retrograde display mechanism, every time the regulation release means passes the end of the month (when entering from the end of the month to the beginning of the month), the regulation by the second day jumper is released, so that every time the end of the month passes, the predetermined position returns to the initial position. Retrograde operation is not hindered.

この種のレトログラード表示機構では、典型的には、規正解除手段は、第一日車が一日分回転する毎に、第二日ジャンパによる規正を解除するように構成されている。   In this type of retrograde display mechanism, typically, the regulation canceling means is configured to cancel the regulation by the second date jumper every time the first date indicator rotates for one day.

その場合、第一日車が一回転して月末を過ぎる際（月末から月初に入る際）にも、第一日車が一日分回転することになるから、第二日ジャンパによる規正が規正解除手段によって確実に解除され得る。但し、月末から月初に入るときに第二日ジャンパによる規正が規正解除手段によって解除され得る限り、毎日解除されなくてもよい。   In that case, even if the first day car makes a full turn and passes the end of the month (from the end of the month to the beginning of the month), the first day car will rotate one day, so the regulation by the second day jumper is regulated. It can be reliably released by the releasing means. However, it is not necessary to cancel every day as long as the regulation by the second day jumper can be canceled by the regulation canceling means when entering from the end of the month to the beginning of the month.

また、上記のレトログラード表示機構では、例えば、第一日歯車部を躍制する第一日ジャンパを備え、該第一日ジャンパは、第一日車が一日分回転して第一日車歯車部の歯を乗り越える際に、第二日ジャンパによる第二日表示車の規正を解除させるべく第二日ジャンパを変位させるように構成されている。   In addition, the retrograde display mechanism includes, for example, a first date jumper that controls the first date gear portion, and the first date jumper rotates the first date indicator for one day and the first date indicator gear. The second day jumper is displaced so as to cancel the regulation of the second day indicator wheel by the second day jumper when getting over the teeth of the part.

その場合、第一日車が一日分回転する毎に、該第一日車の回転に応じて第一日ジャンパが第一日車歯車部の歯を乗り越えるべくジャンプし、該ジャンプの際の第一日ジャンパの回動に応じて第一日ジャンパが第二日ジャンパを回動させて該第二日ジャンパによる第二日車の規正を解除させるので、「規正解除手段は、第一日車が一日分回転する毎に、第二日ジャンパによる規正を解除する」ことになり、所望の動作が行われることになる。すなわち、この場合、第一日ジャンパの変位に応じて第二日ジャンパを変位させるので、その制御が直接的に行われ易い。なお、この場合でも、第一日ジャンパを第二日ジャンパに直接係合させても、第一及び第二日ジャンパの間にリンク部材を介在させて、該リンク部材を介して第一及び第二日ジャンパが係合するようにしてもよい。   In that case, every time the 1st date indicator rotates for one day, according to the rotation of the 1st date indicator, the 1st date jumper jumps to get over the teeth of the 1st date indicator gear part. The first day jumper rotates the second day jumper according to the rotation of the first day jumper and cancels the regulation of the second day wheel by the second day jumper. Every time the car rotates for one day, the regulation by the second day jumper is released ", and a desired operation is performed. That is, in this case, since the second date jumper is displaced according to the displacement of the first date jumper, the control is easily performed directly. Even in this case, even if the first date jumper is directly engaged with the second date jumper, a link member is interposed between the first and second date jumpers and the first and second date jumpers are interposed via the link member. A two-day jumper may be engaged.

なお、上記のレトログラード表示機構では、その代わりに、例えば、第二日ジャンパが第一日車歯車部と係合する第一日車係合部を備え、第一日車が一日分回転する際に、第二日ジャンパは、第一日車係合部を介して変位されて第二日表示車の規正を解除するように構成されていてもよい。   In the retrograde display mechanism, for example, the second date jumper includes a first date indicator engaging portion that engages with the first date indicator gear portion, and the first date indicator rotates for one day. In this case, the second date jumper may be configured to be displaced via the first date indicator engaging portion to cancel the regulation of the second date indicator.

その場合、第一日車が一日分回転する毎に、第二日ジャンパの第一日車係合部が変位されて第二日ジャンパが第二日表示車の規正を解除するので、「規正解除手段は、第一日車が一日分回転する毎に、第二日ジャンパによる規正を解除する」ことになり、所望の動作が行われることになる。この場合、一つの部材（第一日車係合部を備えた第二日ジャンパ）によって、規制解除が行われ得るから、占有スペースが最低限に抑えられ易い。   In that case, every time the 1st date indicator rotates for one day, the 1st date indicator engagement portion of the 2nd date jumper is displaced and the 2nd date jumper cancels the regulation of the 2nd date indication vehicle. The regulation release means will release the regulation by the second day jumper every time the 1st date indicator rotates for one day, and a desired operation is performed. In this case, since the restriction can be released by one member (second date jumper provided with the first date indicator engaging portion), the occupied space is easily suppressed to the minimum.

本発明の別の典型的なレトログラード表示機構では、前記時値が曜からなり、前記時値回し車が曜回し車からなり、前記時値伝え車が曜回し車からなり、前記扇様車作動レバーが復針レバーからなり、前記扇様車が小曜車からなり、前記扇様車歯車部が小曜歯車からなり、前記扇様車ジャンパが小曜ジャンパからなり、曜回し歯車及び曜回し爪を備え一日に一回転される曜回し車と、該曜回し車の曜回し爪によって一日に一歯分だけ回転される曜伝え歯車及び駆動カム部を備えた曜伝え車と、曜伝え車の駆動カム部に弾性的に押付けられて該駆動カム部と係合するカム従節部および小曜車作動歯車部を備えた復針レバーと、該復針レバーの小曜車作動歯車部に噛合し該復針レバーの揺動に応じて回転される小曜歯車及び小曜針を備えた小曜車とを有し、週末を過ぎる毎に該小曜車が逆向きに急転されて初期位置に戻るように構成されたレトログラード表示機構本体と、小曜車の小曜歯車を躍制する小曜ジャンパと、週末を過ぎる毎に、小曜ジャンパによる規正を解除する規正解除手段とを有する。   In another typical retrograde display mechanism of the present invention, the hour value is a day, the hour wheel is a day wheel, the hour value transmission wheel is a day wheel, and the fan-like vehicle is operated. The lever comprises a hammer, the fan wheel comprises a small day wheel, the fan wheel gear portion comprises a small day gear, the fan wheel jumper comprises a small day jumper, a day turning gear and a day turning wheel. A day-turning wheel equipped with a claw and rotated once a day, a day-setting wheel equipped with a day-changing gear and a drive cam that is rotated by one tooth per day by the day-turning claw of the day-turning wheel, A hammer having a cam follower and a small day wheel operating gear that are elastically pressed against the drive cam of the transmission wheel and engaged with the drive cam, and a small day wheel operating gear of the hammer Small day wheel provided with a small day wheel and a small day hand which are meshed with each other and rotated according to the swing of the hammer A retrograde display mechanism body configured such that the small day wheel suddenly reverses and returns to the initial position every weekend, and a small day jumper that dramatically controls the small day gear of the small day wheel And a regulation canceling means for canceling regulation by the small day jumper every weekend.

その場合、レトログラード表示機構は、小曜針による扇様の小曜表示（例えば、日曜日から土曜日（但し、例えば、月曜日から日曜日の如く他の配列でもよい））を行い、週末を過ぎる際すなわち週末（例えば、土曜日）から週初（例えば、日曜日）に移る際に、表示が初期位置に戻るレトログラード表示を行う。この小曜針式のレトログラード表示機構においても、扇様車ジャンパとしての小曜ジャンパが小曜車の小曜歯車を正確な位置で規正して曜日を正確な位置で表示させる。従って、位置がずれて見にくかったり製品の見た目（外観）の高級感等を著しく損なったりすることがない。また、このレトログラード表示機構においても、規正解除手段が週末を過ぎる毎に、小曜ジャンパによる規正を解除するので、週末を過ぎる毎に初期位置に戻る所定のレトログラード動作が妨げられることがない。   In that case, the retrograde display mechanism displays the small day of the fan like the small day hand (for example, from Sunday to Saturday (but other arrangements such as Monday to Sunday may be used)), when the weekend is over, ie the weekend When moving from (for example, Saturday) to the beginning of the week (for example, Sunday), a retrograde display is performed in which the display returns to the initial position. Also in this small day type retrograde display mechanism, the small day jumper as a fan wheel jumper regulates the small day wheel of the small day wheel at an accurate position and displays the day of the week at an accurate position. Therefore, it is not difficult to see because the position is shifted, and the high-quality feeling of the appearance (appearance) of the product is not significantly impaired. Also in this retrograde display mechanism, every time the regulation release means passes the weekend, the regulation by the small day jumper is released, so that the predetermined retrograde operation of returning to the initial position every time the weekend is over is not hindered.

この種のレトログラード表示機構では、典型的には、規正解除手段は、曜伝え車が一日分回転する毎に、小曜ジャンパによる規正を解除するように構成されている。   In this type of retrograde display mechanism, typically, the regulation canceling means is configured to cancel the regulation by the small day jumper every time the day transmission wheel rotates for one day.

その場合、曜伝え車が七日分回転して週末から週初に入るときにも、曜伝え車が一日分回転することになるから、小曜ジャンパによる規正が規正解除手段によって確実に解除され得る。但し、週末から週初に入るときに小曜ジャンパによる規正が規正解除手段によって解除され得る限り、毎日解除されなくてもよい。   In that case, even if the day transmission wheel rotates for seven days and the week starts at the beginning of the week, the day transmission wheel will rotate for one day, so the regulation by the small day jumper is reliably canceled by the regulation release means Can be done. However, it is not necessary to cancel every day as long as the regulation by the small day jumper can be canceled by the regulation canceling means when entering from the weekend to the beginning of the week.

また、上記のレトログラード表示機構では、例えば、曜伝え歯車部を躍制する曜ジャンパを備え、該曜ジャンパは、曜伝え車が一日分回転して曜伝え歯車部の歯を乗り越える際に、小曜ジャンパによる小曜歯車の規正を解除させるべく小曜ジャンパを変位させるように構成されている。   In addition, the retrograde display mechanism includes a day jumper that dramatically controls the day transmission gear portion, for example, when the day transmission wheel rotates one day and gets over the teeth of the day transmission gear portion, The small day jumper is configured to be displaced so as to cancel the correction of the small day gear by the small day jumper.

その場合、曜伝え車が一日分回転する毎に、該曜伝え車の回転に応じて曜ジャンパが曜伝え歯車部の歯を乗り越えるべくジャンプし、該ジャンプの際の曜ジャンパの回動に応じて曜ジャンパが小曜ジャンパを回動させて該小曜ジャンパによる小曜歯車の規正を解除させるので、「規正解除手段は、曜伝え車が一日分回転する毎に、小曜ジャンパによる規正を解除する」ことになり、所望の動作が行われることになる。すなわち、この場合、曜ジャンパの変位に応じて小曜ジャンパを変位させるので、その制御が直接的に行われ易い。なお、この場合でも、曜ジャンパを小曜ジャンパに直接係合させても、曜ジャンパと小曜ジャンパとの間にリンク部材を介在させて、該リンク部材を介して曜ジャンパと小曜ジャンパとが係合するようにしてもよい。   In that case, every time the day transmission wheel rotates for one day, the day jumper jumps over the teeth of the day transmission gear according to the rotation of the day transmission wheel, and the day jumper rotates at the time of the jump. Accordingly, the day jumper rotates the small day jumper to release the setting of the small day gear by the small day jumper, so that “the setting releasing means is set by the small day jumper every time the day transmission wheel rotates for one day. The desired operation will be performed. That is, in this case, since the small day jumper is displaced according to the displacement of the day jumper, the control is easily performed directly. Even in this case, even if the day jumper is directly engaged with the small day jumper, a link member is interposed between the day jumper and the small day jumper, and the day jumper and the small day jumper are connected via the link member. May be engaged.

なお、上記のレトログラード表示機構では、その代わりに、例えば、小曜ジャンパが曜伝え歯車部と係合する曜伝え歯車係合部を備え、曜伝え歯車が一日分回転する際に、小曜ジャンパは、曜伝え歯車係合部を介して変位されて小曜歯車の規正を解除するように構成されている。   In the retrograde display mechanism described above, instead, for example, the small day jumper has a day transmission gear engaging portion that engages with the day transmission gear portion, and when the day transmission gear rotates one day, The jumper is configured to be displaced via the day transmission gear engaging portion to release the setting of the small day gear.

その場合、曜伝え歯車が一日分回転する毎に、小曜ジャンパの曜伝え歯車係合部が変位されて小曜ジャンパが小曜歯車の規正を解除するので、「規正解除手段は、曜伝え車が一日分回転する毎に、小曜ジャンパによる規正を解除する」ことになり、所望の動作が行われることになる。この場合、一つの部材（曜伝え歯車係合部を備えた小曜ジャンパ）によって、規制解除が行われ得るから、占有スペースが最低限に抑えられ易い。   In this case, every time the day transmission gear rotates for one day, the day transmission gear engaging portion of the small day jumper is displaced and the small day jumper releases the regulation of the small day gear. Every time the transmission wheel rotates for one day, the regulation by the small day jumper is released ", and the desired operation is performed. In this case, since the restriction can be canceled by one member (small day jumper provided with the day transmission gear engaging portion), the occupied space is easily suppressed to the minimum.

本発明の時計は、前記目的を達成すべく、上述のようなレトログラード表示機構を具備する。時計は、機械式時計であっても、アナログ式の電子時計であってもよい。   The timepiece of the present invention is provided with the retrograde display mechanism as described above in order to achieve the above object. The timepiece may be a mechanical timepiece or an analog electronic timepiece.

本発明の好ましい一実施例のレトログラード表示機構としてのレトログラード式ビッグデイト表示機構を備えた本発明の好ましい一実施例の時計の一部を示す平面説明図（第二日車を外した状態）。BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an explanatory plan view showing a part of a timepiece according to a preferred embodiment of the present invention equipped with a retrograde big date display mechanism as a retrograde display mechanism according to a preferred embodiment of the present invention (with the second date indicator removed); 図１の時計において第二日車を重ねた状態の平面説明図。FIG. 2 is an explanatory plan view of a state in which the second date indicator is overlapped in the timepiece of FIG. 図１の時計の外観を示した平面説明図。FIG. 2 is an explanatory plan view showing the appearance of the timepiece of FIG. 1. 図１の時計のレトログラード表示機構としてのレトログラード式ビッグデイト表示機構の変形例の平面説明図。The plane explanatory view of the modification of the retrograde type big date display mechanism as the retrograde display mechanism of the timepiece of FIG. 図１の時計のレトログラード表示機構の別の変形例としてのレトログラード式曜表示機構の構造を示した平面説明図。FIG. 6 is an explanatory plan view showing the structure of a retrograde day display mechanism as another modification of the retrograde display mechanism of the watch of FIG. 1. 図５のレトログラード式曜表示機構をレトログラード表示機構として備えた時計の一部の平面説明図。FIG. 6 is an explanatory plan view of a part of a timepiece having the retrograde day display mechanism of FIG. 5 as a retrograde display mechanism. 図５のレトログラード表示機構としてのレトログラード式曜表示機構の変形例の平面説明図。The plane explanatory view of the modification of the retrograde type day display mechanism as the retrograde display mechanism of FIG.

本発明の好ましい実施の形態のいくつかを添付図面に示した好ましい実施例に基づいて説明する。   Several preferred embodiments of the present invention will be described based on preferred examples shown in the accompanying drawings.

本発明の好ましい第一実施例のレトログラード表示機構について具体的に説明する前に、レトログラード表示機構としてのレトログラード式ビッグデイト表示機構１を備えた本発明の好ましい第一実施例の時計７の外観について図３に基づいて大まかに説明する。   Before specifically describing the retrograde display mechanism of the first preferred embodiment of the present invention, the appearance of the timepiece 7 of the first preferred embodiment of the present invention equipped with the retrograde big date display mechanism 1 as the retrograde display mechanism. This will be roughly described with reference to FIG.

時計７は、腕時計の如きウオッチであって、中心軸線Ｃのまわりで回る時針１１、分針１２及び秒針１３を有すると共に、巻真１４の突出端にリューズ１５を有する。時計７は、また、文字板１６の概ね１２時の位置に日窓１７を有する。   The timepiece 7 is a watch such as a wristwatch, and includes an hour hand 11, a minute hand 12 and a second hand 13 that rotate around a central axis C, and a crown 15 at a protruding end of the winding stem 14. The timepiece 7 also has a date window 17 at approximately 12:00 on the dial 16.

日窓１７内には、「１」の桁ないし位の日付を表わす第一日付ＢＤ１（図示の例では「１」）と、「１０」の桁ないし位の日付を表わす第二日付ＢＤ２（図示の例では、「０」）とが表示されている。   In the date window 17, a first date BD1 (“1” in the example shown) representing the date of the digit “1” or place and a second date BD2 (shown) representing the date of the place “10” or place. In this example, “0”) is displayed.

時計７では、レトログラード式ビッグデイト表示機構１は、図１に示したような構造を有する。このレトログラード式ビッグデイト表示機構１では、「時値」は「日」であり、レトログラード表示機構１は「１０」の桁の日付をレトログラード表示するように構成されたビッグデイト表示機構、即ち、レトログラード式ビッグデイト表示機構からなる。   In the timepiece 7, the retrograde big date display mechanism 1 has a structure as shown in FIG. In the retrograde big date display mechanism 1, the “hour value” is “day”, and the retrograde display mechanism 1 is a big date display mechanism configured to retrogradely display the date of “10” digits, that is, retrograde. It consists of a big date display mechanism.

レトログラード表示機構としてのレトログラード式ビッグデイト表示機構１は、「１」の桁（位）の日付に係る時値伝え車としての第一日車２０と、「１０」の桁（位）の日付に係る扇様車としての第二日車４０（図1及び図２参照）とを備える。   The retrograde big date display mechanism 1 as a retrograde display mechanism includes a first date indicator 20 as a time value transmitting wheel related to a date of “1” (digit) and a date of “10” (digit). A second date wheel 40 (see FIGS. 1 and 2) as a fan wheel is provided.

第一日車２０は、図1からわかるように、環状の第一日付表示面部２１を備えた円環状の第一日車本体部２２と、該第一日車本体部２２の奥側（裏蓋に近い側）において内周縁に形成された３１個の内歯２３からなる第一日車歯車部２４と、第一日車本体部２２の環状板状部２５の背面側で且つ第一日車歯車部２４の外周側に形成された駆動カム部３０とを有する。   As can be seen from FIG. 1, the first date indicator 20 includes an annular first date indicator main body portion 22 having an annular first date display surface portion 21, and a rear side (back side) of the first date indicator main body portion 22. On the back side of the first date indicator gear portion 24 composed of 31 internal teeth 23 formed on the inner peripheral edge and the annular plate-like portion 25 of the first date indicator main body 22 on the first day And a drive cam portion 30 formed on the outer peripheral side of the vehicle gear portion 24.

第一日付表示面部２１には、図1からわかるように、第一日付ＢＤ１として、「０１」日〜「０９」日に対応する「１」〜「９」までの９個の日付と、「１０」日〜「１９」日に対応する「０」〜「９」までの１０個の日付と、「２０」日〜「２９」日に対応する「０」〜「９」までの１０個の日付と、「３０」日〜「３１」日に対応する「０」及び「１」の２個の日付とが付されている。   As can be seen from FIG. 1, the first date display surface portion 21 has nine dates from “1” to “9” corresponding to the “01” day to “09” date as the first date BD1, and “ 10 dates from “0” to “9” corresponding to days “10” to “19”, and 10 dates from “0” to “9” corresponding to days “20” to “29” The date and two dates “0” and “1” corresponding to the “30” to “31” days are attached.

駆動カム部３０は、最小径の円弧からなり「０１」〜「０９」の日を規定する第一カム円弧部３１と、二番目に径の小さい円弧からなり「１０」〜「１９」の日を規定する第二カム円弧部３２と、三番目に径の小さい円弧からなり「２０」〜「２９」の日を規定する第三カム円弧部３３と、最大径の円弧からなり「３０」〜「３１」の日を規定する第四カム円弧部３４とを備える。第二カム円弧部３２及び第三カム円弧部３３の周方向の拡がり（中心軸線Ｃのところでみた中心角）は実際上同じであり、第四カム円弧部３４の周方向の拡がりよりも５倍程度大きい。第一カム円弧部３１の周方向の拡がり（中心軸線Ｃのところでみた中心角）は、第二カム円弧部３２及び第三カム円弧部３３の周方向の拡がり（中心軸線Ｃのところでみた中心角）よりも少し（１／１０程度）小さい。第一及び第二カム円弧部３１，３２は径の増大する接続傾斜面３５で接続され、第二及び第三カム円弧部３２，３３は径の増大する接続傾斜面３６で接続され、第三及び第四カム円弧部３３，３４は径の増大する接続傾斜面３７で接続されている。一方、第四カム円弧部３４と第一カム円弧部３１はレトログラード表示を行わせるべく最大径から最小径に突然落ちて初期位置に戻るように概ね半径方向に延在した遷移面３８で接続されている。但し、径方向の遷移を許容する限り、遷移部３８の一部又は全体には面がなくてもよい。   The drive cam portion 30 is composed of a circular arc having a minimum diameter and defines a first cam arc portion 31 that defines a day from “01” to “09”, and a second circular arc having a smaller diameter and is formed from “10” to “19”. The second cam arc portion 32 that defines the third, the third cam arc portion 33 that defines the day of “20” to “29”, and the third cam arc portion 33 that defines the day of “20” to “29”, and “30” to And a fourth cam arc portion 34 that defines the day of “31”. The circumferential extent of the second cam arc portion 32 and the third cam arc portion 33 (the central angle seen at the central axis C) is practically the same, and is five times larger than the circumferential extent of the fourth cam arc portion 34. About big. The circumferential extent of the first cam arc portion 31 (center angle seen at the center axis C) is the circumferential extent of the second cam arc portion 32 and the third cam arc portion 33 (center angle seen at the center axis C). ) Is slightly smaller (about 1/10). The first and second cam arc portions 31, 32 are connected by a connecting inclined surface 35 having an increased diameter, and the second and third cam arc portions 32, 33 are connected by a connecting inclined surface 36 having an increased diameter. And the 4th cam circular arc parts 33 and 34 are connected by the connection inclined surface 37 which a diameter increases. On the other hand, the fourth cam arc portion 34 and the first cam arc portion 31 are connected by a transition surface 38 extending substantially in the radial direction so as to suddenly drop from the maximum diameter to the minimum diameter and return to the initial position so as to perform retrograde display. ing. However, as long as the transition in the radial direction is allowed, a part or the whole of the transition part 38 may have no surface.

時計７は、時値回し車としての日回し車７０と第一日ジャンパ２６と第一日ジャンパばね２９とを備える。日回し車７０は、日回し歯車７１及び日回し爪７２を有する。日回し歯車７１は、伝え車７３を介して時車（図示せず）に噛合されていて、Ａ１方向に回転される。日回し爪７２は、時車（図示せず）のＣ１方向回転に応じて図１において時計回りＡ１に一日に一回転され、該Ａ１方向回転の際に、第一日車歯車部２４の歯２３に係合して、該第一日車歯車部２４をＣ１方向に一歯分だけ回転させる。   The timepiece 7 includes a date indicator driving wheel 70 serving as a time value indicator, a first date jumper 26, and a first date jumper spring 29. The date indicator driving wheel 70 includes a date indicator driving wheel 71 and a date indicator driving claw 72. The date turning gear 71 is engaged with an hour wheel (not shown) via a transmission wheel 73 and is rotated in the A1 direction. The date indicator claw 72 is rotated once a day in the clockwise direction A1 in FIG. 1 according to the rotation of the hour wheel (not shown) in the C1 direction, and during the rotation of the A1 direction, The first date indicator gear portion 24 is engaged with the teeth 23 and rotated by one tooth in the C1 direction.

第一日ジャンパばね２９によってＤ１方向にばね負荷された第一日ジャンパ２６は、中心軸線ＤのまわりでＤ１，Ｄ２方向に回動可能に地板の如き支持基板１９に装着され、レバー状のジャンパ本体部２７と、第一日車歯車部２４に対して躍制動作をする躍制爪部２８と、該爪部２８の背面側に位置する係合突起部２７ａとを有する。第一日ジャンパ２６は、日回し車７０による日送り即ち第一日車歯車部２４のＣ１方向回転動作が進行している際にはＤ２方向に回動されてジャンプ動作を行うと共に該日送りの終了の際にはＤ１方向に回動されて第一日車歯車部２４を所定の間欠回転位置に位置決めし、次の日送りまでの間、第一日ジャンパばね２９の作用下で第一日車歯車部２４の回転を規正する。   The first date jumper 26, which is spring-loaded in the direction D1 by the first date jumper spring 29, is mounted on the support substrate 19 such as a base plate so as to be rotatable in the directions D1 and D2 around the central axis D, and is a lever-like jumper. It has a main body portion 27, a jumping claw portion 28 that performs a jumping operation with respect to the first date indicator gear portion 24, and an engaging projection portion 27 a located on the back side of the claw portion 28. The first date jumper 26 is rotated in the D2 direction when the date feeding by the date indicator driving wheel 70, that is, when the first date wheel gear portion 24 is rotating in the C1 direction, performs a jump operation and the date feeding. Is finished, the first date indicator gear portion 24 is positioned at a predetermined intermittent rotation position, and the first date jumper spring 29 is operated under the action of the first date jumper spring 29 until the next date feeding. The rotation of the date wheel gear portion 24 is regulated.

レトログラード表示機構としてのレトログラード式ビッグデイト表示機構１は、第一日車２０と第二日車４０とをつなぐ扇様車作動レバーとしての第二日車作動レバー６０を有する。第二日車作動レバー６０は、中心軸線ＥのまわりでＥ１，Ｅ２方向に回動可能であり、作動レバーばね６９によってＥ１方向にばね負荷されている。   The retrograde big date display mechanism 1 as a retrograde display mechanism has a second date indicator operation lever 60 as a fan-like wheel operation lever that connects the first date indicator 20 and the second date indicator 40. The second date indicator operating lever 60 is rotatable around the central axis E in the directions E1 and E2, and is spring-loaded in the direction E1 by the operating lever spring 69.

第二日車作動レバー６０は、全体として概ね「Ｌ」字状であって「Ｌ」を形成する二つの腕部６１，６２を有する。第二日車作動レバー６０の一方の腕部６１は、作動レバーばね６９の作用下で、先端部６３において第一日車２０の駆動カム部３０に弾性的に押付けられて該駆動カム部３０と係合するカム従節として働く。第二日車作動レバー６０の他方の腕部６２は、扇様車作動歯車部としての第二日車作動歯車部６４を先端部に備える。   The second date indicator operating lever 60 has two arm portions 61 and 62 that are generally “L” -shaped and form “L” as a whole. One arm portion 61 of the second date indicator operating lever 60 is elastically pressed against the drive cam portion 30 of the first date indicator 20 at the distal end portion 63 under the action of the operating lever spring 69. Acts as a cam follower to engage with. The other arm portion 62 of the second date indicator operating lever 60 includes a second date indicator operating gear portion 64 as a fan-like wheel operating gear portion at the tip.

各月の「０１」日〜「０９」日には、第二日車作動レバー６０のカム従節６１の先端部６３が作動レバーばね６９の作用下で第一日車２０の駆動カム３０の第一カム円弧部３１に実際上係合し、第二日車作動レバー６０のレバー部ないし腕部６２が最大限Ｅ１方向に回動された回動位置を採り、腕部６２の先端の第二日車作動歯車部６４は、図１に示したように、Ｅ２方向端縁側に位置する歯部６４ａで第二日車４０の対応する歯車部に係合する。   From the “01” day to the “09” day of each month, the tip 63 of the cam follower 61 of the second date indicator operation lever 60 is moved by the actuating lever spring 69 of the drive cam 30 of the first date indicator 20. The first cam arc portion 31 is actually engaged, and the lever portion or arm portion 62 of the second date indicator operating lever 60 is rotated to the maximum in the E1 direction. As shown in FIG. 1, the two-day wheel operating gear portion 64 is engaged with a corresponding gear portion of the second date indicator 40 by a tooth portion 64 a located on the edge side in the E2 direction.

各月の「１０」日〜「１９」日には、第二日車作動レバー６０のカム従節６１の先端部６３が駆動カム３０の第二カム円弧部３２に実際上係合し、第二日車作動レバー６０のレバー部ないし腕部６２が一段階だけＥ２方向に回動された回動位置を採り、腕部６２の先端の第二日車作動歯車部６４は、図１に示した位置よりも多少Ｅ２方向に回動されて、Ｅ２方向端縁に寄った領域に位置する歯部６４ｂで第二日車４０の対応する歯車部に係合する。   On the “10” to “19” days of each month, the tip 63 of the cam follower 61 of the second date indicator operating lever 60 is actually engaged with the second cam arc portion 32 of the drive cam 30, The lever part or arm part 62 of the two-day wheel operating lever 60 takes a rotation position where the lever part or arm part 62 is rotated in the E2 direction by one step, and the second date wheel operating gear part 64 at the tip of the arm part 62 is shown in FIG. It is slightly rotated in the E2 direction rather than the position, and is engaged with the corresponding gear portion of the second date indicator 40 by the tooth portion 64b located in the region near the edge of the E2 direction.

また、各月の「２０」日〜「２９」日には、第二日車作動レバー６０のカム従節６１の先端部６３が駆動カム３０の第三カム円弧部３３に実際上係合し、第二日車作動レバー６０のレバー部ないし腕部６２が更に一段階Ｅ２方向に回動された回動位置を採り、腕部６２の先端の第二日車作動歯車部６４は、更にＥ２方向に回動されて、Ｅ１方向端縁に比較的近い領域に位置する歯部６４ｃで第二日車４０の対応する歯車部に係合する。   Also, from the 20th day to the 29th day of each month, the tip 63 of the cam follower 61 of the second date indicator operating lever 60 is actually engaged with the third cam arc 33 of the drive cam 30. The lever portion or arm portion 62 of the second date indicator operating lever 60 is further rotated in the one-step E2 direction, and the second date indicator operating gear portion 64 at the tip of the arm portion 62 is further E2 Is rotated in the direction and engaged with the corresponding gear portion of the second date indicator 40 at the tooth portion 64c located in a region relatively close to the edge in the E1 direction.

更に、各月の「３０」日〜「３１」日には、第二日車作動レバー６０のカム従節６１の先端部６３が駆動カム３０の第四カム円弧部３４に実際上係合し、第二日車作動レバー６０のレバー部ないし腕部６２が最大限Ｅ２方向に回動された回動位置を採り、腕部６２の先端の第二日車作動歯車部６４は、最大限Ｅ２方向に回動されて、Ｅ１方向端縁側に位置する歯部６４ｄで第二日車４０の対応する歯車部に係合する。   Further, from the 30th day to the 31st day of each month, the tip 63 of the cam follower 61 of the second date indicator operating lever 60 is actually engaged with the fourth cam arc 34 of the drive cam 30. The lever portion or arm portion 62 of the second date indicator operating lever 60 takes the rotational position where the lever portion or the arm portion 62 is rotated in the E2 direction as much as possible. Is rotated in the direction and engaged with the corresponding gear portion of the second date indicator 40 by the tooth portion 64d located on the edge side in the E1 direction.

扇様車としての第二日車４０は、図１に示したような扇様車歯車部としての第二日車歯車部４１と、図２に示したような扇様車表示部としての第二日板部４２とを有する。第二日板部４２は、カシメ等により第二日車歯車部４１に固定されている。第二日車４０のうち第二日車歯車部４１が歯車部として働く範囲は、図１において円弧状に歯が並んだ扇形領域であり、第二日車歯車部４１は、実際上、扇形歯車として機能する。   The second date indicator 40 as a fan wheel includes a second date wheel gear portion 41 as a fan wheel gear portion as shown in FIG. 1 and a second date wheel gear portion 41 as a fan wheel display portion as shown in FIG. A two-day plate portion 42. The second date plate portion 42 is fixed to the second date wheel gear portion 41 by caulking or the like. The range in which the second date indicator gear portion 41 works as the gear portion of the second date indicator 40 is a fan-shaped region in which teeth are arranged in an arc shape in FIG. 1, and the second date indicator gear portion 41 is actually a sector shape. Functions as a gear.

第二日板部４２は、図２からわかるように、第二日付表示面部４３を備え、第二日付表示面部４３には、第二日付ＢＤ２として、「０１」日〜「０９」日の間における１０の位（桁）の日付を表す「０」の日付文字と、「１０」日〜「１９」日の間における１０の位（桁）の日付を表す「１」の日付文字と、「２０」日〜「２９」日の間における１０の位（桁）の日付を表す「２」の日付文字と、「３０」日〜「３１」日の間における１０の位（桁）の日付を表す「３」の日付文字とが付されると共に、各日付文字ＢＤ２の右側には、１の位（桁）の日付を視認可能にする窓４４が設けられている。窓４４の窓枠は、左枠（左縁）を除いて文字板１６の日窓１７の外側に位置する。   As can be seen from FIG. 2, the second date plate portion 42 includes a second date display surface portion 43, and the second date display surface portion 43 has a date between “01” and “09” as the second date BD2. A date character of “0” representing the date of the tenth place (digit) in “,” a date character of “1” representing the date of the tenth place (digit) between the “10” day and the “19” day, The date character of “2” representing the date of the 10th place (digit) between the 20th day and the “29” day, and the date of the 10th place (digit) between the “30” day and the “31” day A date character “3” is attached, and a window 44 is provided on the right side of each date character BD2 so that the date of the first place (digit) can be visually recognized. The window frame of the window 44 is located outside the date window 17 of the dial 16 except for the left frame (left edge).

なお、図２に示した例では、第二日板部４２は円板状の形状を有するけれども、第二日板部４２のうち実質的に働く部分は、図２において、放射状に延びた想像線４２ａ，４２ｂの間の扇形の領域であり、第二日板部４２は、このような扇形の板であってもよい。図２において、例えば、左下の領域は、１２時の位置の代わりに他の位置（例えば６時の位置）でビッグデイト表示を行う際に、「１０」の位（桁）の「０」，「１」，「２」，「３」の文字を表示位置に応じた向きに記載することにより利用され得るオプション領域である。   In the example shown in FIG. 2, the second date plate portion 42 has a disc shape, but the substantially working portion of the second date plate portion 42 is an imaginary shape that extends radially in FIG. 2. It is a fan-shaped region between the lines 42a and 42b, and the second date plate portion 42 may be such a fan-shaped plate. In FIG. 2, for example, the lower left area is “0”, the digit of “10” (digit) when performing big date display at another position (for example, 6 o'clock) instead of the 12 o'clock position. This is an optional area that can be used by writing the characters “1”, “2”, and “3” in the orientation according to the display position.

再び図１において、第二日ジャンパばね５９によってＦ１方向にばね負荷された第二日ジャンパ５０は、中心軸線ＦのまわりでＦ１，Ｆ２方向に回動可能に地板１９に装着され、レバー状の第二日ジャンパ本体部５１と、該第二日ジャンパ本体部５１の先端部の一側に形成されていて第二日車歯車部４１の第二日車爪車部４５に対して躍制動作をする躍制爪部５２と、第二日ジャンパ本体部５１の概ね反対側において中心軸線Ｆの周縁部から延在した連動腕部５３とを有する。第二日車爪車部４５は複数の爪部４６を備える。第二日車４０のうち第二日車爪車部４５が爪車部として働く範囲は、図１において円弧状に爪４６が並んだ扇形領域であり、第二日車爪車部４５は、実際上、扇形爪車として機能する。この例では、扇形歯車（扇様歯車）としての第二日車歯車部４１の円弧状に並んだ歯部と扇形爪車（扇様爪車）としての第二日車爪車部４５の円弧状に並んだ爪部４６とは概ね同一円周上に位置するけれども、一体に動き得る限り、同一円周上になくてもよい。   Referring again to FIG. 1, the second date jumper 50 spring-loaded in the F1 direction by the second date jumper spring 59 is mounted on the base plate 19 so as to be rotatable around the central axis F in the F1 and F2 directions. The second date jumper main body 51 and the second date jumper main body 51 are formed on one side of the tip portion, and the second date indicator wheel portion 45 of the second date indicator gear portion 41 is dramatically controlled. And an interlocking arm portion 53 extending from the peripheral portion of the central axis F on the substantially opposite side of the second day jumper main body portion 51. The second date indicator claw wheel portion 45 includes a plurality of claw portions 46. In the second date indicator 40, the range in which the second date indicator claw wheel portion 45 works as a claw wheel portion is a fan-shaped region in which the claw 46 is arranged in an arc shape in FIG. In effect, it functions as a fan-shaped claw wheel. In this example, the teeth of the second date indicator gear portion 41 as a sector gear (fan gear) arranged in an arc and the circle of the second date indicator pinion portion 45 as a sector claw wheel (fan-like claw wheel). The claw portions 46 arranged in an arc shape are located on the same circumference, but may not be on the same circumference as long as they can move together.

連動腕部５３は、先端近傍のうち第一日ジャンパ２６の係合突起部２７ａに対面する領域に係合突起部５４を備え、第一日ジャンパ２６がＤ２方向に回動されてジャンプ動作をする際に、第二日ジャンパ５０の係合突起部５４が第一日ジャンパ２６の係合突起部２７ａに係合し該係合突起部２７ａによってＦ２方向に回動されて、第二日車歯車部４１（より詳しくは、その第二日車爪車部４５）に対する規正を解除する。すなわち、このレトログラード表示機構としてのレトログラード式ビッグデイト表示機構１では、日送りに伴って第一日ジャンパ２６が第一日車歯車部２４の規正を解除する毎に、該解除の際に、第一日ジャンパ２６が第二日ジャンパ５０による第二日車歯車部４１の規正を解除させ、第二日車歯車部４１が自由に回転されるのを許容する。   The interlocking arm portion 53 includes an engagement protrusion 54 in a region facing the engagement protrusion 27a of the first date jumper 26 in the vicinity of the tip, and the first date jumper 26 is rotated in the D2 direction to perform a jump operation. In this case, the engaging projection 54 of the second date jumper 50 engages with the engaging projection 27a of the first date jumper 26 and is rotated in the direction F2 by the engaging projection 27a. The regulation with respect to the gear portion 41 (more specifically, the second date indicator pinion portion 45) is released. That is, in the retrograde big date display mechanism 1 as the retrograde display mechanism, every time the 1st date jumper 26 cancels the regulation of the 1st date wheel gear portion 24 with the date feed, The day jumper 26 releases the regulation of the second date indicator gear portion 41 by the second date jumper 50, and allows the second date indicator gear portion 41 to freely rotate.

なお、第一日ジャンパ２６は、該第一日ジャンパ２６が第一日車歯車部２４に対して規正状態にある際には第二日ジャンパ５０の動作に対して干渉しない。すなわち、第二日ジャンパ５０は、第一日ジャンパ２６が第一日車歯車部２４に対してジャンプ動作を行うとき以外は、第二日車作動レバー６０の第二日車作動歯車部６４による第二日車歯車部４１の回転（回動）駆動に対して躍制動作を行う。   The first date jumper 26 does not interfere with the operation of the second date jumper 50 when the first date jumper 26 is in the correct state with respect to the first date indicator gear portion 24. That is, the second date jumper 50 is operated by the second date indicator operating gear portion 64 of the second date indicator operating lever 60 except when the first date jumper 26 performs a jump operation on the first date indicator gear portion 24. A dramatic operation is performed with respect to the rotation (rotation) drive of the second date indicator gear portion 41.

この例では、月末を過ぎる毎に扇様車ジャンパとしての第二日ジャンパ５０による規正を解除する規制解除手段は、第一日ジャンパ２６からなる。即ち、係合手段としての第一日ジャンパ２６が、その係合突起部２７ａで第二日ジャンパ５０の係合突起部５４に係合する。この場合、規正解除手段は、第一日車２０が一日分回転する毎に、第二日ジャンパ５０による規正を解除し、従って、月末を過ぎる際（月末から月初に入る際）にも、第一日車２０が一日分回転する毎に、第二日ジャンパ５０による規正を解除することになる。   In this example, the regulation cancellation means for canceling the regulation by the second day jumper 50 as a fan-shaped car jumper every time the end of the month is passed is composed of the first day jumper 26. That is, the first date jumper 26 as the engagement means is engaged with the engagement projection 54 of the second date jumper 50 by the engagement projection 27a. In this case, the regulation canceling means cancels the regulation by the second day jumper 50 every time the 1st date indicator 20 rotates for one day. Therefore, when the end of the month is passed (from the end of the month to the beginning of the month), Each time the first date wheel 20 rotates for one day, the regulation by the second day jumper 50 is cancelled.

以上の如く構成された時計７のレトログラード式ビッグデイト表示機構１の動作について、説明する。   The operation of the retrograde big date display mechanism 1 of the timepiece 7 configured as described above will be described.

例えば、図３に示したように、文字板１６の日窓１７において、「０１」日の表示がある状態においては、第一日車２０は、概ね図１に示したようなＣ１方向回転位置を採り、日窓１７（図１では想像線で示した）のうち右半分の領域に「１」の桁（位）の日付「１」が表示される。   For example, as shown in FIG. 3, when the date window 17 of the dial 16 has a display of “01” day, the first date indicator 20 is approximately in the C1 direction rotation position as shown in FIG. 1. The date “1” with the digit (rank) of “1” is displayed in the right half area of the date window 17 (indicated by an imaginary line in FIG. 1).

この状態においては、第二日車作動レバー６０のカム従節をなす腕部６１の先端部６３が、駆動カム部３０の遷移面部３８の近傍において第一カム円弧部３１に実際上当接し、第二日車作動レバー６０の腕部６２の先端にある第二日車作動歯車部６４が、歯部６４ａにおいて、第二日車４０の第二日車歯車部４１に噛合している。従って、第二日車４０の第二日板部４２の第二日付表示面部４３は、図２の１０の桁の文字ＢＤ２のうち「０」が、日窓１７の左半分の領域内に位置する。その結果、「０」の右側の窓４４が日窓１７のところに位置し、該窓４４の左側の枠が日窓１７の中央に上下に延び、第一日車２０の文字ＢＤ１である「１」が日窓１７内において窓４４内に位置する。   In this state, the distal end portion 63 of the arm portion 61 forming the cam follower of the second date indicator operating lever 60 is actually in contact with the first cam circular arc portion 31 in the vicinity of the transition surface portion 38 of the drive cam portion 30, The second date indicator operating gear portion 64 at the tip of the arm portion 62 of the date indicator operating lever 60 is engaged with the second date indicator gear portion 41 of the second date indicator 40 at the tooth portion 64a. Accordingly, the second date display surface portion 43 of the second date plate portion 42 of the second date indicator 40 is positioned so that “0” of the ten-digit character BD2 in FIG. To do. As a result, the window 44 on the right side of “0” is positioned at the date window 17, and the left frame of the window 44 extends vertically to the center of the date window 17, and is the character BD 1 of the first date indicator 20. 1 ”is located within the window 44 within the date window 17.

ここで、この時計７のレトログラード式ビッグデイト表示機構１では、日回し車７０の日回し爪７２が第一日車２０の第一日車歯車部２４の歯２３に係合して該歯車部２４を回す比較的短い時間帯以外の大半の時間帯においては、第一日ジャンパ２６の躍制爪部２８が第一日車２０の第一日車歯車部２４の隣接する歯２３，２３の間に嵌り込んで第一日車２０を完全に規正する。従って、第一日車２０がＣ１方向の所定の回転位置において停止状態に保たれるから、第一日車２０の第一日付表示面部２１の「１」の桁（位）の日付ＢＤ１が、日窓１７内の右半分の所定位置に正確に位置決めされ得、適切な日付ＢＤ１の表示が行われ得る。   Here, in the retrograde big date display mechanism 1 of the timepiece 7, the date indicator claw 72 of the date indicator driving wheel 70 engages with the teeth 23 of the first date indicator gear part 24 of the first date indicator 20, and the gear part. In most of the time zones other than the relatively short time zone in which the 24 is turned, the jumping claw portion 28 of the first date jumper 26 is connected to the adjacent teeth 23 and 23 of the first date wheel gear portion 24 of the first date indicator 20. The first date indicator 20 is completely regulated by fitting in between. Accordingly, since the first date indicator 20 is kept stopped at a predetermined rotational position in the C1 direction, the date BD1 of the digit (rank) of “1” on the first date display surface portion 21 of the first date indicator 20 is It can be accurately positioned at a predetermined position in the right half of the date window 17, and an appropriate date BD1 can be displayed.

特に、この時計７のレトログラード式ビッグデイト表示機構１では、一日のうち、日回し車７０の日回し爪７２が第一日車２０の第一日車歯車部２４の歯２３に係合して該歯車部２４を回す比較的短い時間帯以外の大半の時間帯においては、第一日ジャンパ２６の躍制爪部２８が第一日車２０の第一日車歯車部２４の隣接する歯２３，２３の間に嵌り込むだけでなく、第二日ジャンパ５０の躍制爪部５２が第二日車４０の第二日車歯車部４１の第二日車爪車部４５の隣接する爪部４６，４６の間に嵌り込んで第二日車４０を完全に規正するので、第一日車２０だけでなく第二日車４０も、Ｃ１方向の所定の回転位置において停止状態に保たれ得る。従って、第二日車４０の第二日付表示面部４３の「１０」の桁（位）の日付ＢＤ２が、日窓１７内の左半分の所定位置に正確に位置決めされ得、適切な日付ＢＤ２の表示が行われ得ると共に、第二日車４０の第二日付表示面部４３の「１０」の桁（位）の日付ＢＤ２の右側に位置する窓４４が、日窓１７内の右半分の所定位置であって第一日付ＢＤ１を中央に含む位置に、正確に位置決めされ得、適切な日付ＢＤ１の表示を許容する。   In particular, in the retrograde big date display mechanism 1 of the timepiece 7, the date indicator 72 of the date indicator driving wheel 70 engages with the teeth 23 of the first date indicator gear portion 24 of the first date indicator 20 during the day. In most time periods other than the relatively short time period when the gear portion 24 is rotated, the jumping claw portion 28 of the first date jumper 26 is adjacent to the first date wheel gear portion 24 of the first date indicator 20. 23, 23, the jumping claw portion 52 of the second date jumper 50 is adjacent to the second date claw wheel portion 45 of the second date wheel gear portion 41 of the second date wheel 40. Since the second date indicator 40 is completely set by being fitted between the portions 46, 46, not only the first date indicator 20, but also the second date indicator 40 is maintained in a stopped state at a predetermined rotational position in the C1 direction. obtain. Accordingly, the date BD2 of the digit (rank) of the second date display surface 43 of the second date indicator 40 can be accurately positioned at a predetermined position in the left half of the date window 17, and the appropriate date BD2 The window 44 located on the right side of the date BD2 of the digit (rank) of the “10” in the second date display surface portion 43 of the second date indicator 40 can be displayed on the right half of the date window 17 at a predetermined position. Thus, it can be accurately positioned at a position including the first date BD1 in the center, and allows an appropriate date BD1 to be displayed.

ここで、第二日ジャンパ５０による第二日車歯車部４１のＣ１方向回転位置の強制的な規正は、第二日車作動レバー６０のカム従節をなす腕部６１の先端部６３のカム円弧部３１への強制的な押付よりも強く、例えば、第一カム円弧部３１の円弧状周面の位置精度が低かったり、作動レバー６０の腕部６１，６２等の位置精度が多少低くても、これらに実際上影響されることなく、第二日車４０の正確な位置決めを可能にする。   Here, the forced regulation of the C1 direction rotation position of the second date indicator gear portion 41 by the second date jumper 50 is performed by the cam of the distal end portion 63 of the arm portion 61 that is a cam follower of the second date indicator operation lever 60. It is stronger than the forced pressing to the arc portion 31, and for example, the position accuracy of the arc-shaped peripheral surface of the first cam arc portion 31 is low, or the position accuracy of the arm portions 61, 62 of the operating lever 60 is somewhat low. However, the second date indicator 40 can be accurately positioned without being influenced by these.

より詳しくは、駆動カム部３０の各カム面すなわちカム円弧部３１，３２，３３，３４は、第二日車作動レバー６０のカム従節をなす腕部６１の先端部６３が該カム円弧部３１，３２，３３，３４に当接した際に第二日車歯車部４１が採るＣ１方向回転位置（従って、第二日車歯車部４１と一体的な第二日車爪車部４５が採るＣ１方向回転位置）が、当該第二日車爪車部４５が本来採るべき回転位置よりも僅かに手前に位置する暫定的な回転位置になるように、僅かに低く（中心軸線Ｃからの距離が僅かに小さく）形成されている。従って、第二日ジャンパ５０の躍制爪部５２が第二日ジャンパばね５９の作用下で第二日車歯車部４１の爪車部４５の隣接爪部４６，４６間に押付けられて、第二日車爪車部４５を完全に規正する際に、第二日車爪車部４５は僅かではあるが更にＣ１方向に回動され、これに伴い、作動レバー６０が作動レバーばね６９に抗して僅かにＥ２方向に回動され、作動レバー６０のカム従節をなす腕部６１の先端部６３が対応するカム面即ちカム円弧部３１，３２，３３，３４から僅かに離れて小間隙６５ができる。従って、このレトログラード式ビッグデイト表示機構１では、カム円弧部３１，３２，３３，３４の円弧状周面の位置精度が低かったり、作動レバー６０の腕部６１，６２等の位置精度が多少低くても、これらに実際上影響されることなく、第二日車４０の正確な位置決めが行われ得る。   More specifically, each cam surface of the drive cam portion 30, that is, the cam arc portions 31, 32, 33, and 34, the tip portion 63 of the arm portion 61 that forms the cam follower of the second date indicator operation lever 60 is the cam arc portion. C1 direction rotation position taken by the second date indicator gear portion 41 when abutting on 31, 32, 33, 34 (therefore, the second date indicator pinion portion 45 integrated with the second date indicator gear portion 41 is taken). (C1-direction rotational position) is slightly lower (distance from the central axis C) so that the second date indicator pinion wheel portion 45 is a provisional rotational position located slightly in front of the rotational position to be originally taken. Is slightly smaller). Therefore, the jumping claw portion 52 of the second date jumper 50 is pressed between the adjacent claw portions 46 and 46 of the claw wheel portion 45 of the second date wheel gear portion 41 under the action of the second date jumper spring 59, and When completely setting the date indicator claw wheel portion 45, the second date wheel indicator wheel portion 45 is further slightly rotated in the C1 direction, and accordingly, the operating lever 60 resists the operating lever spring 69. Then, the tip 63 of the arm 61 which is slightly rotated in the E2 direction and forms the cam follower of the operating lever 60 is slightly separated from the corresponding cam surface, that is, the cam arcs 31, 32, 33, 34. 65 is possible. Therefore, in the retrograde big date display mechanism 1, the position accuracy of the arcuate circumferential surfaces of the cam arc portions 31, 32, 33, 34 is low, and the position accuracy of the arm portions 61, 62 of the operating lever 60 is somewhat low. However, the second date indicator 40 can be accurately positioned without being influenced by these.

但し、例えば、腕部６１が腕部６２に対して相対的な基準位置から時計回りに相対回転可能に形成され、腕部６１が腕部６２に対して上記の相対的な基準位置を越えて反時計回りに相対回転されるのが禁止されるようになっていて且つ時計回りの相対回転が比較的強いばね力に抗して行われるようになっているような場合には、カム円弧部３１，３２，３３，３４が本来の位置よりも僅かに高くなっていてもよい。   However, for example, the arm portion 61 is formed to be rotatable relative to the arm portion 62 from the reference position relative to the arm portion 62 in a clockwise direction, and the arm portion 61 exceeds the relative reference position with respect to the arm portion 62. When the counterclockwise relative rotation is prohibited and the clockwise relative rotation is performed against a relatively strong spring force, the cam arc portion 31, 32, 33, 34 may be slightly higher than the original position.

一日の終りに近づくと、日回し車７０の日回し爪７２が、第一日車歯車部２４の隣接する歯２３に係合して第一日車歯車部２４を一歯分だけＣ１方向に回転させる。これに応じて、第一日ジャンパ２６が第一日車歯車部２４の歯部２３に対して躍制動作をし、次の隣接歯部２３，２３の間に嵌り込んで、一歯分だけＣ１方向に回転した位置で第一日車２０を規正する。第一日ジャンパ２６がジャンプ動作をする際に、第二日ジャンパ５０は係合突起部５４で第一日ジャンパ２６の係合突起部２７ａと係合して一時的に規正解除位置を採るけれども、その後直ちに元の規正位置に戻るので、第二日車４０は、実際上同じ位置に保たれ、第二日ジャンパ５０が第二日車爪車部４５の規正を再開すると、第二日車４０は再度元の正確な位置に位置決めされる。   When the end of the day is approached, the date indicator claw 72 of the date indicator driving wheel 70 engages with the adjacent tooth 23 of the first date indicator gear portion 24 to move the first date indicator gear portion 24 by one tooth in the C1 direction. Rotate to In response to this, the first date jumper 26 performs a rapid operation with respect to the tooth portion 23 of the first date wheel gear portion 24 and fits between the next adjacent tooth portions 23 and 23 so that only one tooth is accommodated. The first date indicator 20 is set at a position rotated in the C1 direction. When the first day jumper 26 performs a jump operation, the second day jumper 50 engages with the engagement protrusion 27a of the first day jumper 26 at the engagement protrusion 54 to temporarily take the regulation release position. Then, immediately after returning to the original regulation position, the second date indicator 40 is kept in the same position in practice, and when the second date jumper 50 resumes the regulation of the second date indicator claw wheel portion 45, the second date indicator 40 is again positioned in its original exact position.

以上のような動作は、「０９」日まで続けられる。「０９」日から「１０」日に移る際には、第一日車２０のＣ１方向回転に伴って第二日車作動レバー６０がＥ２方向に回動され、第二日車４０がＣ１方向に回動される点を除き、同様な動作が行われる。その後、月末まで、以上のような動作が繰返される。   The above operation is continued until the “09” day. When moving from the “09” day to the “10” day, as the first date indicator 20 rotates in the C1 direction, the second date indicator operation lever 60 is rotated in the E2 direction, and the second date indicator 40 moves in the C1 direction. The same operation is performed except that it is rotated to the right. Thereafter, the above operation is repeated until the end of the month.

月末から月初に入る際には、第一日車２０の日送りの進行に伴って第一日ジャンパ２６がＤ２方向に回動され、これに伴い第二日ジャンパ５０が、第一日ジャンパ２６の係合突起部２７ａに係合突起部５４で係合されて、第二日車爪車部４５の回転を許容する規正解除位置を採り、第二日車４０の自由な回動を許容する状態になる。このとき、第一日車２０のＣ１方向回転に伴って第二日車作動レバー６０の腕部６１の先端部６３が駆動カム部３０の遷移面部３８に達し作動レバーばね６９の作用下で第一カム円弧部２４に向かって落ちると共に、作動レバー６０の第二日車作動歯車部６４を介して、第二日車歯車部４１を急激にＣ２方向に回動させる。これにより、第二日車４０は、「１０」の位（桁）の日付「３」が日窓１７内に表示される回転位置（図２に示した回動位置）から「１０」の位（桁）の日付「０」が日窓１７内に表示される回転位置（図３に示した回動位置）へとＣ１方向の反対方向（反時計回り）Ｃ２に素早く回転して戻るレトログラード動作が生じる。   When entering the beginning of the month from the end of the month, the 1st date jumper 26 is rotated in the direction D2 as the date feed of the 1st date indicator 20 proceeds, and accordingly, the 2nd date jumper 50 is moved to the 1st date jumper 26. Is engaged with the engagement projection portion 27 a by the engagement projection portion 54, adopts a regulation release position that allows the rotation of the second date indicator pinion wheel portion 45, and allows the second date indicator 40 to freely rotate. It becomes a state. At this time, with the rotation of the first date indicator 20 in the C1 direction, the distal end portion 63 of the arm portion 61 of the second date indicator operation lever 60 reaches the transition surface portion 38 of the drive cam portion 30 and is actuated by the operation lever spring 69. While falling toward one cam arc portion 24, the second date indicator gear portion 41 is rapidly rotated in the C2 direction via the second date indicator operating gear portion 64 of the operating lever 60. As a result, the second date indicator 40 has the position “10” from the rotation position (the rotation position shown in FIG. 2) where the date “3” in the position (digit) of “10” is displayed in the date window 17. Retrograde operation in which the date “0” of (digit) is quickly rotated back to the rotation position (rotation position shown in FIG. 3) displayed in the date window 17 in the opposite direction C1 (counterclockwise) C2. Occurs.

すなわち、この時計７のレトログラード式ビッグデイト表示機構１では、一方では、第二日ジャンパ５０が第二日車４０の歯車部４１と一体的な爪車部４５に対して躍制動作を行って日付ＢＤ２の正確な位置での表示を可能にし、他方では、月末から月初に移る時点において、第一日ジャンパ２６が係合突起部２７ａ，５４間の係合ないし干渉を介して第二日ジャンパ５０による第二日車４０の第二日車歯車部４１（の第二爪車部４５）の規正を解除するので、第二日車４０がＣ２方向に急激に回転して初期位置に戻るのを許容して、所定のレトログラード動作を許容する。   That is, in the retrograde big date display mechanism 1 of the timepiece 7, on the other hand, the second date jumper 50 performs a jumping operation on the claw wheel portion 45 integrated with the gear portion 41 of the second date indicator 40. The date BD2 can be displayed at an accurate position. On the other hand, at the time when the date shifts from the end of the month to the beginning of the month, the first date jumper 26 is engaged with the engagement protrusions 27a and 54 through the engagement or interference between the second date jumper. 50, the regulation of the second date indicator gear portion 41 (second claw wheel portion 45) of the second date indicator 40 is released, so that the second date indicator 40 suddenly rotates in the C2 direction and returns to the initial position. And a predetermined retrograde operation is allowed.

即ち、この時計７のレトログラード式ビッグデイト表示機構１では、第一及び第二日ジャンパ２６，４０が係合突起部２７ａ，５４で係合し得るようになっているので、レトログラード表示の長所及びジャンパによる規正（位置決め）の長所の両者が同時に実現される。   In other words, in the retrograde big date display mechanism 1 of the timepiece 7, the first and second date jumpers 26, 40 can be engaged by the engaging protrusions 27a, 54. Both of the advantages of jumper regulation (positioning) are realized at the same time.

以上においては、第二日ジャンパ５０による第二日車４０の規正の解除が第一日ジャンパ２６によって行われる例について説明したけれども、その代わりに、例えば、図４に示したように、第二日ジャンパによる第二日車４０の規正の解除が第一日ジャンパによることなく第一日車２０によって直接行われる（規制解除手段が第一日車２０からなる）ようにしてもよい。   In the above description, the example in which the release of the regulation of the second date indicator 40 by the second date jumper 50 is performed by the first date jumper 26 has been described, but instead, for example, as shown in FIG. The cancellation of the regulation of the second date indicator 40 by the date jumper may be directly performed by the first date indicator 20 without using the first date jumper (the restriction release means includes the first date indicator 20).

図４には、本発明の一変形例のレトログラード表示機構としてのレトログラード式ビッグデイト表示機構１Ａを備えた時計７Ａの一部が示されている。図４のレトログラード式ビッグデイト表示機構１Ａでは、第一日ジャンパ２６Ａ及び第二日ジャンパ５０Ａの構造（形状、配置及び結合関係）が、図１のレトログラード式ビッグデイト表示機構１の第一日ジャンパ２６及び第二日ジャンパ５０の構造（形状、配置及び結合関係）と異なる点を除いて、図１のレトログラード式ビッグデイト表示機構１と同様な構造を有する。図４のレトログラード式ビッグデイト表示機構１Ａにおいて、図１のレトログラード式ビッグデイト表示機構１の要素と実質的に同一の要素には同一の符号が付され、図１のレトログラード式ビッグデイト表示機構１の要素と異なるところがあるけれども対応する要素には同一の符号の後に添字Ａが付されている。   FIG. 4 shows a part of a timepiece 7A including a retrograde big date display mechanism 1A as a retrograde display mechanism according to a modification of the present invention. In the retrograde big date display mechanism 1A shown in FIG. 4, the first date jumper 26A and the second date jumper 50A have the same structure (shape, arrangement and connection relationship) as the first date jumper of the retrograde big date display mechanism 1 shown in FIG. 26 and the second date jumper 50 have the same structure as the retrograde big date display mechanism 1 of FIG. In the retrograde big date display mechanism 1A of FIG. 4, the same reference numerals are given to the elements substantially the same as those of the retrograde big date display mechanism 1 of FIG. 1, and the retrograde big date display mechanism 1 of FIG. The corresponding elements are given the suffix A after the same reference numerals.

中心軸線ＤＡのまわりでＤ１，Ｄ２方向に回動可能な第一日ジャンパ２６Ａは、レバー状のジャンパ本体部２７Ａと、第一日車歯車部２４に対して躍制動作をする躍制爪部２８Ａとを有し、第一日ジャンパばね（図示せず）によってＤ１方向にばね負荷されている。   The first date jumper 26A, which can be rotated in the directions D1 and D2 around the central axis DA, is a lever-like jumper main body portion 27A and a jumping claw portion which performs a jumping operation with respect to the first date indicator gear portion 24. 28A and is spring-loaded in the direction D1 by a first day jumper spring (not shown).

大まかに言えば、第一日ジャンパ２６Ａは、図１の第一日ジャンパ２６と異なり、係合突起部２７ａに相当する係合部を欠く点を除いて、図１の第一日ジャンパ２６と概ね同様に構成されている。   Roughly speaking, the first date jumper 26A differs from the first date jumper 26 in FIG. 1 except that the first date jumper 26 in FIG. The configuration is almost the same.

中心軸線ＦＡのまわりでＦ１，Ｆ２方向に回動可能な第二日ジャンパ５０Ａは、第二日ジャンパ本体部をなす腕部５１Ａの先端部の一側に躍制爪部５２Ａを備え、腕部５１Ａとは異なる方向に延びた他方の腕部５３Ａの先端部に第一日車２０の第一日車歯車部２４の歯部２３に係合する被係合爪部５５を備える。この第二日ジャンパ５０Ａの場合、腕部５３Ａの被係合爪部５５が第一日車２０の第一日車歯車部２４の歯部２３に直接係合し得るように構成されていることから、腕部５３Ａが被係合爪部５５及びその近傍部分において第一日ジャンパ２６Ａのジャンパ本体２７Ａに対して時計７Ａの厚さ方向に重なった位置（該厚さ方向に見ると相互間には隙間がある）にある。ここで、第一日ジャンパ２６Ａの回転中心ＤＡは第一日車歯車部２４の並んだ円の近傍に位置することが好ましい。なお、第一日ジャンパ２６Ａと第二日ジャンパ５０Ａとが時計７Ａの周方向にみて相互に離れた位置にあってもよく、その場合、厚さ方向に相互にずれた位置になくてもよい。このレトログラード式ビッグデイト表示機構１Ａにおいても、第二日ジャンパ５０Ａが第二日車４０の第二日車歯車部４１と一体的な第二日車爪車部４５に対して躍制動作をして第二日車爪車部４５を規正するので、駆動カム部（図示せず）の形状や第二日車作動レバー（図示せず）のカム従節部（図示せず）の形状等の誤差にかかわらず、ビッグデイトの１０の桁（位）の日付ＢＤ２も日窓１７内の所定位置に正確に表示し得る。   The second date jumper 50A that can rotate in the F1 and F2 directions around the central axis FA includes a jumping claw portion 52A on one side of the tip of the arm portion 51A that forms the second date jumper main body portion. An engaged claw portion 55 that engages with the tooth portion 23 of the first date indicator gear portion 24 of the first date indicator 20 is provided at the tip end portion of the other arm portion 53A extending in a direction different from 51A. In the case of the second date jumper 50A, the engaged claw portion 55 of the arm portion 53A can be directly engaged with the tooth portion 23 of the first date indicator gear portion 24 of the first date indicator 20. From the position where the arm portion 53A overlaps the jumper main body 27A of the first date jumper 26A in the engaged claw portion 55 and the vicinity thereof (in the thickness direction, when viewed in the thickness direction). There is a gap). Here, the rotation center DA of the first date jumper 26A is preferably located in the vicinity of the circle in which the first date indicator gear portions 24 are arranged. The first date jumper 26A and the second date jumper 50A may be located at positions separated from each other when viewed in the circumferential direction of the timepiece 7A. In this case, the first date jumper 26A and the second date jumper 50A may not be located at positions shifted from each other in the thickness direction. . Also in this retrograde type big date display mechanism 1A, the second date jumper 50A performs a dramatic operation with respect to the second date indicator pinion portion 45 integrated with the second date indicator gear portion 41 of the second date indicator 40. Therefore, the shape of the drive cam portion (not shown), the shape of the cam follower portion (not shown) of the second date indicator operating lever (not shown), etc. Regardless of the error, the date BD2 of the tenth digit (place) of the big date can also be accurately displayed at a predetermined position in the date window 17.

第一日ジャンパ２６Ａ及び第二日ジャンパ５０Ａを備えたレトログラード式ビッグデイト表示機構１Ａでは、一日の終りに近づくと、日回し車７０の日回し爪７２が、第一日車歯車部２４の隣接する歯２３に係合して第一日車歯車部２４を一歯分だけＣ１方向に回転させる。このとき、該第一日車２０の第一日車歯車部２４のＣ１方向回転に応じて、一方では、第一日ジャンパ２６Ａが第一日車歯車部２４の歯部２３に対してジャンプ動作をし、他方では、第二日ジャンパ５０Ａが被係合爪部５５で（規制解除手段としての第一日車２０の）第一日車歯車部２４の隣接する歯２３によるＣ１方向回転力を受けてＦ２方向に回動されて第二日ジャンパ５０Ａの躍制爪部５２Ａが第二日車４０の第二日車歯車部４１（の爪車部４５）に対する規正を解除する。なお、第一日ジャンパ２６Ａがジャンプ動作の後で第一日車２０の再規正を完了するときには、第二日ジャンパ５０Ａの躍制爪部５２Ａも第二日車爪車部４５に対して規正位置に戻り、第二日ジャンパ５０Ａの被係合爪部５５が、第一日車歯車部２４の歯部２３と実際上干渉しない位置を採る（典型的には、第一日ジャンパ２６Ａによる第一日車歯車部２４の規正の完了前に第二日ジャンパ５０Ａによる第二日車４０の再規正が完了している）。   In the retrograde big date display mechanism 1A provided with the first day jumper 26A and the second day jumper 50A, the date turning claw 72 of the date indicator driving wheel 70 of the date indicator driving wheel portion 24 becomes closer to the end of the day. The first date indicator gear portion 24 is engaged with the adjacent tooth 23 and rotated in the C1 direction by one tooth. At this time, according to the rotation of the first date indicator gear portion 24 of the first date indicator 20 in the C1 direction, on the other hand, the first date jumper 26A jumps to the tooth portion 23 of the first date indicator gear portion 24. On the other hand, the second date jumper 50 </ b> A has the C1 direction rotational force by the tooth 23 adjacent to the first date indicator gear portion 24 (of the first date indicator 20 as the restriction release means) at the engaged claw portion 55. Receiving and turning in the F2 direction, the jumping claw 52A of the second date jumper 50A releases the regulation for the second date indicator gear portion 41 (the claw wheel portion 45) of the second date indicator 40. When the first date jumper 26A completes the re-calibration of the first date indicator 20 after the jump operation, the jumping claw portion 52A of the second date jumper 50A also corrects the second date indicator claw wheel portion 45. Returning to the position, the engaged claw portion 55 of the second date jumper 50A takes a position where it does not actually interfere with the tooth portion 23 of the first date indicator gear portion 24 (typically, the first date jumper 26A uses the first date jumper 26A. (2) The second date jumper 50A has been re-calibrated by the second date jumper 50A before the date wheel gear portion 24 is corrected.

その後、図１のレトログラード式ビッグデイト表示機構１の場合と同様に、前述のような動作が繰返され、この図４のレトログラード式ビッグデイト表示機構１Ａにおいても、図１のレトログラード式ビッグデイト表示機構１と同様に、ビッグデイトの日付ＢＤ２，ＢＤ１が日窓１７の所定位置に正確に位置決めされて表示され得ることになる。   Thereafter, similar to the case of the retrograde big date display mechanism 1 of FIG. 1, the above-described operation is repeated. In the retrograde big date display mechanism 1A of FIG. 4, the retrograde big date display mechanism of FIG. Similarly to 1, the dates BD2 and BD1 of the big date can be accurately positioned and displayed at a predetermined position of the date window 17.

以上においては、レトログラード表示機構によって月末から月初に入る際に１０の桁（位）の日付ＢＤ２が「０」に戻るようにしたレトログラード式ビッグデイト表示機構の例について説明したけれども、その代わり、例えば、週末から週初に入る際に曜日の表示が例えば、「土曜日（Ｓａｔｕｒｄａｙ）」から「日曜日（Ｓｕｎｄａｙ）」に戻るようにしたレトログラード式曜表示機構においても、本発明のレトログラード表示機構の特徴は、具現化され得る。   In the above description, an example of the retrograde big date display mechanism in which the date BD2 of the tenth digit (place) returns to “0” when entering the beginning of the month from the end of the month by the retrograde display mechanism has been described. In the retrograde day display mechanism in which the display of the day of the week is changed from “Saturday” to “Sunday” when entering from the weekend to the beginning of the week, the feature of the retrograde display mechanism of the present invention is Can be embodied.

図６には、曜日に関して、レトログラード表示を行うようにしたレトログラード式曜表示部８を備えたレトログラード表示機構としてのレトログラード式曜表示機構１Ｂを有する時計７Ｂの例が示されている。   FIG. 6 shows an example of a timepiece 7B having a retrograde day display mechanism 1B as a retrograde display mechanism provided with a retrograde day display unit 8 that performs retrograde display regarding the day of the week.

時計７Ｂは、図６に示したように、図３の時計７と同様な時針１１及び分針１２による時分表示部９Ｈに加えて、曜針ないし曜表示針１０によるレトログラード式曜表示部８を有する。時計７Ｂは、更に、小秒針１３Ｂによる小秒表示部９Ｓや２４時間針１８による２４時表示部９Ｔや、日針１７Ｂによる日付表示部９Ｍを有する。但し、表示部９Ｍ，９Ｔはなくてもよい。図６からわかるように、曜表示針１０は９時の位置にある中心軸線ＧのまわりでＧ１，Ｇ２方向に回動可能であり、小秒針１３Ｂは６時の位置にある中心軸線Ｈのまわりで回転可能であり、２４時間針１８は１２時の位置にある中心軸線Ｊのまわりで回転可能であり、日針１７Ｂは３時の位置にある中心軸線Ｋのまわりで回転可能である。なお、曜表示針１０は、日曜日（Ｓｕｎ）から土曜日（Ｓａｔ）までは、曜日が変わる毎にＧ１方向に一ステップだけ間欠的に回動し、週末から週初に戻る際に、Ｇ１方向端にある土曜日（Ｓａｔ）の位置からＧ２方向端にある日曜日（Ｓｕｎ）の位置にＧ２方向に素早く戻るレトログラード動作をする。   As shown in FIG. 6, the timepiece 7B has a retrograde day indicator 8 with a day hand or day indicator hand 10 in addition to an hour / minute indicator 9H with hour hand 11 and minute hand 12 similar to the timepiece 7 in FIG. Have. The timepiece 7B further includes a small second display portion 9S by the small second hand 13B, a 24-hour display portion 9T by the 24-hour hand 18, and a date display portion 9M by the date hand 17B. However, the display units 9M and 9T may not be provided. As can be seen from FIG. 6, the day indicator hand 10 can be rotated in the directions of G1 and G2 around the central axis G at the 9 o'clock position, and the small second hand 13B is rotated around the central axis H at the 6 o'clock position. The 24-hour hand 18 can rotate about the central axis J at the 12 o'clock position, and the date hand 17B can rotate about the central axis K at the 3 o'clock position. The day indicator hand 10 is intermittently rotated by one step in the G1 direction each time the day of the week is changed from Sunday (Sun) to Saturday (Sat). A retrograde operation is performed to quickly return in the G2 direction from the position of Saturday (Sat) to the position of Sunday (Sun) at the end of the G2 direction.

図５に示したように、レトログラード表示機構としてのレトログラード式曜表示機構１Ｂは、時値回し車としての曜回し車７０Ｂと、時値伝え車としての曜伝え車２０Ｂと、扇様車作動レバーとしての復針レバー６０Ｂと、扇様車としての小曜車４０Ｂと、扇様車ジャンパとしての小曜ジャンパ５０Ｂと、曜ジャンパ２６Ｂとを有する。   As shown in FIG. 5, a retrograde day display mechanism 1B as a retrograde display mechanism includes a day indicator driving wheel 70B as an hour indicator driving wheel, a day indicator wheel 20B as an hour indicator wheel, and a fan-like vehicle operating lever. A hammer 60B as a fan, a small day wheel 40B as a fan wheel, a small day jumper 50B as a fan wheel jumper, and a day jumper 26B.

図５のレトログラード式曜表示機構１Ｂにおいて、図１のレトログラード式ビッグデイト表示機構１の要素と同様な役割をする要素には同一の符号の後に符号Ｂが付されている。   In the retrograde day display mechanism 1B shown in FIG. 5, elements having the same functions as those of the retrograde big date display mechanism 1 shown in FIG.

筒車（時車）等の運針用輪列の車により中心軸線ＬのまわりでＬ１方向に回転される曜回し車７０Ｂは時値回し歯車としての曜回し歯車７１Ｂと時値回し爪としての曜回し爪７２Ｂとを備える。   The day indicator driving wheel 70B rotated in the direction L1 around the central axis L by a wheel train wheel such as an hour wheel (hour wheel) is a day indicator wheel 71B as a hour counterclockwise gear and a day indicator as a hour counterclaw. A turning claw 72B.

曜伝え車２０Ｂは、曜回し車７０Ｂの曜回し爪７２Ｂによって一日に一歯分だけ中心軸線ＭのまわりでＭ１方向に回転される時値伝え歯車部としての曜伝え歯車部２４Ｂと、駆動カム部としての曜伝え車カム部３０Ｂとを備える。曜伝え車カム部３０Ｂは、アルキメデス曲線の如く中心Ｍからの距離（半径位置）がＭ２方向（Ｍ１方向とは反対方向）に徐々に大きくなる形状の主カム面部３９と、該主カム面部３９の最大径部３９ａと最小径部３９ｂとをつなぐ遷移部ないし遷移面部３８Ｂとを備える。   The day transmission wheel 20B is driven by a day transmission gear portion 24B as a time value transmission gear portion rotated in the M1 direction around the central axis M by one tooth per day by the day rotation pawl 72B of the day turning wheel 70B. The day transmission wheel cam part 30B as a cam part is provided. The day transmission wheel cam portion 30B includes a main cam surface portion 39 having a shape in which the distance (radial position) from the center M gradually increases in the M2 direction (the direction opposite to the M1 direction) as in the Archimedes curve, and the main cam surface portion 39. The transition part thru | or the transition surface part 38B which connect the largest diameter part 39a and the minimum diameter part 39b are provided.

復針レバー６０Ｂは、中心軸線ＮのまわりでＮ１，Ｎ２方向に回動可能で、該中心軸線Ｎの両側に腕部６１Ｂ，６２Ｂを備える。復針レバー６０Ｂの腕部６１Ｂは、腕部曜伝え車２０Ｂのカム部３０Ｂに復針レバー戻しばね６９Ｂにより弾性的に押付けられて該曜伝え車カム部３０Ｂと係合するカム従節部として働く。復針レバー６０Ｂの腕部６２Ｂは、先端部６３Ｂに扇様車作動歯車部としての小曜車作動歯車部６４Ｂを備える。   The hammer 60B is rotatable in the directions of N1 and N2 around the central axis N, and includes arm portions 61B and 62B on both sides of the central axis N. The arm 61B of the hammer 60B is a cam follower that is elastically pressed against the cam 30B of the arm day transmission wheel 20B by the hammer return spring 69B and engages the day transmission cam 30B. work. The arm portion 62B of the hammer 60B includes a small day wheel operating gear portion 64B as a fan-like wheel operating gear portion at the tip portion 63B.

扇様車としての小曜車４０Ｂは、復針レバー６０Ｂの小曜車作動歯車部６４Ｂに噛合し該復針レバー６０ＢのＮ１，Ｎ２方向の回動に応じて中心軸線ＧのまわりでＧ１，Ｇ２方向に回転される扇様車歯車部としての小曜車歯車部４１Ｂと、小曜車爪車部４５Ｂとを有する。この例では、円弧状に延びた小曜車歯車部４１Ｂ及び小曜車爪車部４５Ｂが、同一平面内で同一円周上に位置する。但し、小曜車歯車部４１Ｂ及び小曜車爪車部４５Ｂは、同一円周上になくてもよく、また、同一平面内になくてもよい。小曜車４０Ｂには、中心軸線ＧのまわりでＧ１，Ｇ２方向に回転されるように扇様車表示部としての小曜針１０が取付けられている。   The small day wheel 40B as a fan-shaped wheel meshes with the small day wheel operating gear portion 64B of the hammer 60B and rotates around the central axis G in accordance with the rotation of the hammer 60B in the N1 and N2 directions. It has a small day wheel gear portion 41B as a fan-like wheel gear portion rotated in the G2 direction and a small day wheel claw wheel portion 45B. In this example, the small day wheel gear portion 41B and the small day wheel pinion wheel portion 45B extending in an arc shape are located on the same circumference in the same plane. However, the small day wheel gear portion 41B and the small day wheel claw wheel portion 45B may not be on the same circumference or in the same plane. A small day hand 10 serving as a fan-shaped wheel display unit is attached to the small day wheel 40 </ b> B so as to rotate around the central axis G in the directions G <b> 1 and G <b> 2.

中心軸線ＰのまわりでＰ１，Ｐ２方向に回動可能な小曜ジャンパ５０Ｂは、ジャンパ本体部をなす一方の腕部５１Ｂの先端部の一側に躍制爪部５２Ｂを備え、小曜ジャンパばね５９Ｂの作用下で該躍制爪部５２Ｂによって小曜車４０Ｂの小曜車爪車部４５Ｂに対して躍制動作をする。小曜ジャンパ５０Ｂの他方の腕部５３Ｂの先端部は、被係合部５４Ｂになっている。   The small day jumper 50B that can rotate in the P1 and P2 directions around the central axis P includes a jumping claw 52B on one side of the tip of one arm 51B that forms the jumper body, and the small day jumper spring. Under the action of 59B, the jumping claw part 52B performs a jumping operation on the small day wheel claw wheel part 45B of the small day wheel 40B. The tip of the other arm portion 53B of the small day jumper 50B is an engaged portion 54B.

中心軸線ＱのまわりでＱ１，Ｑ２方向に回動可能な曜ジャンパ２６Ｂは、ジャンパ本体部をなす一方の腕部２７Ｂの先端部の一側に躍制爪部２８Ｂを備え、例えば裏物押え（図示せず）から延びた曜ジャンパ加圧ばね部２９Ｂの作用下で該躍制爪部２８Ｂによって曜伝え車２０Ｂの歯車部２４Ｂに対して躍制動作をする。規制解除手段としても働く曜ジャンパ２６Ｂの他方の腕部の先端部には、レバー状の係合突起部２７ａＢが形成されている。   The day jumper 26B that can rotate in the Q1 and Q2 directions around the central axis Q includes a jumping claw portion 28B on one side of a tip portion of one arm portion 27B constituting the jumper main body portion. Under the action of the day jumper pressurizing spring portion 29B extending from (not shown), the jumping claw portion 28B performs a jumping operation on the gear portion 24B of the day transmission wheel 20B. A lever-like engagement protrusion 27aB is formed at the tip of the other arm of the day jumper 26B that also functions as a restriction release means.

規制解除手段としての曜ジャンパ２６Ｂが、その躍制動作の際に曜伝え車２０Ｂの歯車部２４ＢによってＱ２方向に回動される（ジャンプ動作に入る）と、曜ジャンパ２６Ｂの係合突起部２７ａＢがＱ２方向に対面している小曜ジャンパ５０Ｂの被係合部５４ＢをＴ方向に押す。従って、小曜ジャンパ５０Ｂは、中心軸線ＰのまわりでＰ２方向に回動されて小曜車爪車部４５Ｂに対する規正を解除する。   When the day jumper 26B as the restriction release means is rotated in the Q2 direction (enters the jump operation) by the gear portion 24B of the day transmission wheel 20B during the jumping operation, the engagement protrusion 27aB of the day jumper 26B is entered. Pushes the engaged portion 54B of the small day jumper 50B facing the Q2 direction in the T direction. Therefore, the small day jumper 50B is rotated in the direction P2 around the central axis P to release the regulation for the small day wheel claw wheel portion 45B.

その結果、毎日、日替わりの際に、曜ジャンパ２６Ｂがその係合部２７ａＢと小曜ジャンパ５０Ｂの被係合部５４Ｂとの係合を介して、小曜ジャンパ５０Ｂによる小曜車４０Ｂの爪車部４５Ｂに対する規正を解除する。従って、週末を過ぎる際（７日おきにくる日替わりの際）にも、曜ジャンパ２６Ｂがその係合部２７ａＢと小曜ジャンパ５０Ｂの被係合部５４Ｂとの係合を介して、小曜車４０Ｂに対する小曜ジャンパ５０Ｂの規正を解除する。   As a result, the daily jumper 26B engages with the engaging portion 27aB of the small day jumper 50B and the engaged portion 54B of the small day jumper 50B. The regulation for the part 45B is released. Therefore, even after the weekend (when the day changes every seven days), the day jumper 26B is engaged with the engagement portion 27B of the small day jumper 50B and the small day wheel via the engagement of the engagement portion 54B of the small day jumper 50B. The regulation of the small day jumper 50B for 40B is canceled.

このレトログラード表示機構１Ｂでは、復針レバー６０Ｂのカム従節をなす腕部６１Ｂの先端部が曜伝え車カム部３０Ｂの遷移部３８Ｂのところの最小径部３９ｂ又はその近傍に位置する際に、復針レバー６０ＢがＮ２方向に最大限回動された位置を採り、小曜車４０ＢがＧ２方向に最大限回動され、小曜車４０Ｂに取付けられた小曜針１０がＧ２方向の端の日曜日（Ｓｕｎ）を表示する位置を採る。   In the retrograde display mechanism 1B, when the distal end portion of the arm portion 61B forming the cam follower of the hammer 60B is positioned at or near the minimum diameter portion 39b at the transition portion 38B of the day transmission cam portion 30B, The hammer 60B is at the maximum rotated position in the N2 direction, the small day wheel 40B is rotated to the maximum in the G2 direction, and the small day hand 10 attached to the small day wheel 40B is at the end in the G2 direction. The position for displaying Sunday (Sun) is taken.

時の進行に伴い曜回し車７０ＢがＬ１方向に一回転される毎に曜伝え車２０Ｂが、曜伝え歯車２４Ｂの一歯分だけＭ１方向に回転され、それに伴いカム従節をなす腕部６１Ｂで曜伝え車カム部３０Ｂの主カム面部３９に当接している復針レバー６０ＢがＮ１方向に間欠回動され、小曜車４０Ｂ及び小曜針１０がＧ１方向に一日分ずつ間欠回動される。   Each time the day indicator driving wheel 70B is rotated once in the L1 direction as the time progresses, the day transmitting wheel 20B is rotated in the M1 direction by one tooth of the day transmitting gear 24B, and the arm portion 61B forming a cam follower accordingly. The hammer 60B in contact with the main cam surface portion 39 of the day transmission wheel cam portion 30B is intermittently rotated in the N1 direction, and the small day wheel 40B and the small day hand 10 are intermittently rotated in the G1 direction every day. Is done.

ここで、小曜針１０のＧ１方向回動位置は、大まかには、曜伝え車カム部３０Ｂ及び復針レバー６０Ｂによって規定されるけれども、小曜針１０の最終的なＧ１方向回動位置は、小曜車４０Ｂの爪車部４５Ｂと該爪車部４５Ｂを規正する小曜ジャンパ５０Ｂによって位置決めされる。即ち、典型的には、カム部３０Ｂ及び復針レバー６０Ｂにより規定される小曜車４０Ｂ及び小曜針１０のＧ１方向暫定回転（回動）位置が、最終的に位置決めされるべきＧ１方向回転（回動）位置よりも少しだけＧ２方向にずれている（Ｇ１方向にみて手前にある）ように、カム部３０Ｂの主カム面部３９が予め形成される。その場合、暫定回動位置にある小曜車４０Ｂの小曜車爪車部４５Ｂに対して、小曜ジャンパ５０Ｂの躍制爪部５２Ｂが、小曜ジャンパばね５９Ｂの作用下で規正動作を行って、小曜車爪車部４５Ｂの隣接爪部間に嵌り込む際に、小曜車爪車部４５Ｂを備えた小曜車４０Ｂが更にＧ１方向に回動される。即ち、小曜車ジャンパ５０Ｂの小曜車ジャンパばね５９Ｂが、復針レバーばね６９Ｂのばね力に起因するトルクに打克って、小曜車４０Ｂを介して復針レバー６０ＢをＮ１方向に回動させる。このとき、復針レバー６０Ｂの腕部すなわちカム従節部６１Ｂの先端部は、カム部３０Ｂの主カム面３９からわずかに離れる。   Here, the rotation position of the small day hand 10 in the G1 direction is roughly defined by the day transmission wheel cam portion 30B and the hammer 60B, but the final rotation position of the small day hand 10 in the G1 direction is The small day wheel 40B is positioned by a claw wheel portion 45B and a small day jumper 50B that regulates the claw wheel portion 45B. That is, typically, the G1 direction provisional rotation (rotation) position of the small day wheel 40B and the small day hand 10 defined by the cam portion 30B and the hammer 60B is the G1 direction rotation to be finally positioned. The main cam surface portion 39 of the cam portion 30B is formed in advance so as to be slightly displaced in the G2 direction from the (rotation) position (located in front of the G1 direction). In that case, the jumping claw portion 52B of the small day jumper 50B performs a regulating operation under the action of the small day jumper spring 59B with respect to the small day wheel claw wheel portion 45B of the small day wheel 40B in the provisional rotation position. Thus, when fitting between the adjacent claw portions of the small day wheel claw wheel portion 45B, the small day wheel 40B including the small day wheel claw wheel portion 45B is further rotated in the G1 direction. That is, the small day wheel jumper spring 59B of the small day wheel jumper 50B overcomes the torque caused by the spring force of the hammer lever spring 69B, and rotates the hammer 60B in the N1 direction via the small day wheel 40B. Move. At this time, the arm portion of the hammer 60B, that is, the distal end portion of the cam follower portion 61B is slightly separated from the main cam surface 39 of the cam portion 30B.

なお、復針レバー６０Ｂを介してカム部３０Ｂに力を加えて曜伝え車２０Ｂ自体をＭ２方向に回転させ得るような場合には、カム部３０Ｂによって極力正確なＧ１方向回動位置が規定されるようになっていてもよい。   When the day transmission wheel 20B itself can be rotated in the M2 direction by applying a force to the cam portion 30B via the hammer 60B, the cam portion 30B defines an accurate G1 direction rotation position as much as possible. It may come to be.

前述のような曜回し車７０Ｂの回転に伴う小曜車４０Ｂ及び小曜針１０のＧ１方向の間欠回動動作が、土曜日（Ｓａｔ）の夜まで続けられる。なお、毎日、日替わりの際に、曜ジャンパ２６Ｂがその係合部２７ａＢと小曜ジャンパ５０Ｂの被係合部５４Ｂとの係合を介して、小曜ジャンパ５０Ｂによる小曜車４０Ｂの爪車部４５Ｂに対する規正を解除することは前述の通りである。   The intermittent rotation operation of the small day wheel 40B and the small day hand 10 in the G1 direction accompanying the rotation of the day indicator driving wheel 70B as described above is continued until the night of Saturday (Sat). It should be noted that the day jumper 26B engages with the engaging portion 27aB of the small day jumper 50B and the engaged portion 54B of the small day jumper 50B when the day changes daily. Canceling the regulation for 45B is as described above.

週末において土曜日から日曜日に移る際には、曜伝え車２０ＢのＭ１方向回転に伴いＱ２方向に回動されてジャンプ動作をする曜ジャンパ２６Ｂの係合突起部２７ａＢにより被係合部５４Ｂで力Ｔを受けてＰ２方向に回動される小曜ジャンパ５０Ｂが小曜車爪車部４５Ｂの回転規正を解除し、小曜車４０Ｂが回転自在になる。従って、週末において土曜日から日曜日に移る際に曜伝え車２０ＢのＭ１方向回転に伴い、復針レバー６０Ｂのカム従節をなす腕部６１Ｂの先端部が曜伝え車２０Ｂのカム部３０Ｂの最大径部３９ａに達しこれを過ぎると、復針レバー６０Ｂが復針レバー戻しばね６９Ｂの作用下で、最小径部３９ｂに落ちる。すなわち、復針レバー６０Ｂが復針レバー戻しばね６９Ｂの作用下で中心軸線ＮのまわりでＮ２方向に回動され、歯車部６４Ｂ，４１Ｂの噛合を介して小曜車４０ＢがＧ２方向に回転され、小曜針１０が土曜日（Ｓａｔ）を指すＧ１方向端位置から日曜日（Ｓｕｎ）を指すＧ２方向端位置に戻るレトログラード動作が行われる。   When the weekend shifts from Saturday to Sunday, a force T is applied to the engaged portion 54B by the engaging protrusion 27aB of the day jumper 26B that is turned in the Q2 direction and performs a jumping operation in accordance with the M1 rotation of the day transmission wheel 20B. In response to this, the small day jumper 50B rotated in the P2 direction cancels the rotation regulation of the small day wheel claw wheel portion 45B, and the small day wheel 40B becomes rotatable. Accordingly, when the day transmission wheel 20B rotates in the M1 direction on the weekend from Saturday to Sunday, the tip of the arm portion 61B that forms the cam follower of the hammer 60B is the maximum diameter of the cam portion 30B of the day transmission wheel 20B. When the portion 39a is reached and passed, the hammer 60B falls to the minimum diameter portion 39b under the action of the hammer return spring 69B. In other words, the hammer 60B is rotated in the N2 direction around the central axis N under the action of the hammer return spring 69B, and the small day wheel 40B is rotated in the G2 direction through the meshing of the gear portions 64B and 41B. A retrograde operation is performed in which the small day hand 10 returns from the G1 direction end position indicating Saturday (Sat) to the G2 direction end position indicating Sunday (Sun).

以上においては、小曜ジャンパ５０Ｂによる小曜車４０のＢ規正の解除が曜ジャンパ２６Ｂによって行われる例について説明したけれども、その代わりに、例えば、図７に示したように、小曜ジャンパによる小曜車４０Ｂの規正の解除が曜ジャンパによることなく曜伝え車２０Ｂによって直接行われるようにしてもよい。   In the above description, the example in which the cancellation of the B regulation of the small day wheel 40 by the small day jumper 50B is performed by the day jumper 26B has been described, but instead, for example, as illustrated in FIG. The cancellation of the regulation of the day wheel 40B may be directly performed by the day transmission wheel 20B without using the day jumper.

図７には、本発明の別の一変形例のレトログラード表示機構としてのレトログラード式曜表示機構１Ｅを備えた時計７Ｅの一部が示されている。図７のレトログラード式曜表示機構１Ｅでは、曜ジャンパ２６Ｅ及び小曜ジャンパ５０Ｅの構造（形状、配置及び結合関係）が、図５のレトログラード式曜表示機構１Ｂの曜ジャンパ２６Ｂ及び小曜ジャンパ５０Ｂの構造（形状、配置及び結合関係）と異なる点を除いて、図１のレトログラード表示機構１と概ね同様な構造を有する。厳密には、小曜ジャンパ５０Ｅの形状等の変更に応じて小曜ジャンパばね５９Ｅの配置等も変更されている。更に、細かくは、小曜ジャンパ５０Ｅの形状及び配置の変更に伴い小曜車４０Ｂの（扇様）歯車部４１Ｂ及び（扇様）爪車部４５Ｂの周方向相対位置も所望に応じて変更されるけれども、ここでは、説明の簡明化のために、実際上同様であるとして同じ符号で説明する。図７のレトログラード式曜表示機構１Ｅにおいて、図５のレトログラード式曜表示機構１Ｂの要素と実質的に同一の要素には同一の符号が付され、図４のレトログラード式曜表示機構１Ｂの要素と異なるところがあるけれども対応する要素には添字Ｂの代わりに添字Ｅが最後に付され、図３のレトログラード表示機構としてのレトログラード式ビッグデイト表示機構１Ａの要素と異なるところがあるけれども対応する要素には添字Ａの代わりに添字Ｅが最後に付されている。   FIG. 7 shows a part of a timepiece 7E provided with a retrograde day display mechanism 1E as a retrograde display mechanism according to another modification of the present invention. In the retrograde day display mechanism 1E of FIG. 7, the structure (shape, arrangement and connection relationship) of the day jumper 26E and small day jumper 50E is the same as that of the day jumper 26B and small day jumper 50B of the retrograde day display mechanism 1B of FIG. Except for the difference from the structure (shape, arrangement, and coupling relationship), it has a structure substantially similar to the retrograde display mechanism 1 of FIG. Strictly speaking, the arrangement or the like of the small day jumper spring 59E is changed in accordance with the change in the shape or the like of the small day jumper 50E. More specifically, the circumferential relative positions of the (fan-like) gear portion 41B and the (fan-like) claw wheel portion 45B of the small day wheel 40B are changed as desired in accordance with the change in the shape and arrangement of the small day jumper 50E. However, here, in order to simplify the description, the same reference numerals will be used assuming that they are practically the same. In the retrograde day display mechanism 1E of FIG. 7, the same reference numerals are given to substantially the same elements as those of the retrograde day display mechanism 1B of FIG. 5, and the elements of the retrograde day display mechanism 1B of FIG. Although there is a difference, the corresponding element has a suffix E instead of the suffix B, and there is a difference from the element of the retrograde big date display mechanism 1A as the retrograde display mechanism in FIG. Subscript E is added at the end instead of A.

大まかに言えば、曜ジャンパ２６Ｅは、図５の曜ジャンパ２６Ｂと異なり、係合突起部２７ａＢに相当する係合部を欠く点を除いて、図５の曜ジャンパ２６Ｂと概ね同様に構成され、レバー状のジャンパ本体部２７Ｅと、曜伝え車歯車部２４Ｂに対して躍制動作をする躍制爪部２８Ｅとを備え、中心軸線ＱのまわりでＱ１，Ｑ２方向に回動可能で、曜ジャンパ加圧ばね部２９ＢによってＱ１方向の力を受けている。   Broadly speaking, the day jumper 26E is configured in substantially the same manner as the day jumper 26B in FIG. 5 except that the day jumper 26E is different from the day jumper 26B in FIG. 5 and lacks an engagement portion corresponding to the engagement protrusion 27aB. A lever-shaped jumper main body 27E and a jumping claw 28E that performs a jumping operation with respect to the day transmission wheel gear 24B, and can be rotated around the central axis Q in the Q1 and Q2 directions. A force in the Q1 direction is received by the pressure spring portion 29B.

中心軸線ＰＥのまわりでＰ１，Ｐ２方向に回動可能な小曜ジャンパ５０Ｅは、小曜ジャンパ本体部をなす腕部５１Ｅの先端部の一側に躍制爪部５２Ｅを備え、腕部５１Ｅとは異なる方向に延びた他方の腕部５３Ｅの先端部に曜伝え車２０Ｂの曜伝え車歯車部２４Ｂの歯部２３Ｂに係合する被係合爪部５５Ｅを備える。このレトログラード表示機構１Ｅにおいても、小曜ジャンパ５０Ｅが小曜車４０Ｂの小曜車歯車部４１Ｂと一体的な小曜車爪車部４５Ｂに対して躍制動作をして小曜車爪車部４５Ｂを規正するので、曜伝え車２０Ｂの曜伝え車カム部３０Ｂの形状や復針レバー６０Ｂのカム従節部をなす腕部６１Ｂの形状等の誤差にかかわらず、小曜針１０が扇形の表示部８（図６も参照）において所定位置に正確に位置決めされて適切な曜表示を行い得る。   The small day jumper 50E that can rotate in the P1 and P2 directions around the central axis PE includes a jumping claw 52E on one side of the tip of the arm 51E that forms the small day jumper main body. Is provided with a claw portion 55E to be engaged with the tooth portion 23B of the day transmission wheel gear portion 24B of the day transmission wheel 20B at the tip of the other arm portion 53E extending in a different direction. Also in the retrograde display mechanism 1E, the small day jumper 50E performs a rapid operation on the small day wheel claw wheel portion 45B integrated with the small day wheel gear portion 41B of the small day wheel 40B, and the small day wheel claw wheel portion. 45B is set, so that the small day hand 10 is fan-shaped regardless of errors such as the shape of the day transmission wheel cam portion 30B of the day transmission wheel 20B and the shape of the arm portion 61B forming the cam follower portion of the hammer 60B. The display unit 8 (see also FIG. 6) can be accurately positioned at a predetermined position to display an appropriate day of the week.

曜ジャンパ２６Ｅ及び小曜ジャンパ５０Ｅを備えたレトログラード式曜表示機構１Ｅでは、各曜日（一日）の終りに近づくと、曜回し車７０Ｂの曜回し爪７２Ｂが、曜伝え車歯車部２４Ｂの隣接する歯２３Ｂに係合して曜伝え車歯車部２４Ｂを一歯分だけＭ１方向に回転させる。このとき、該曜伝え車２０Ｂの曜伝え車歯車部２４ＢのＭ１方向回転に応じて、一方では、曜ジャンパ２６Ｅが曜伝え車歯車部２４Ｂの歯部２３Ｂに対してジャンプ動作をし、他方では、小曜ジャンパ５０Ｅが被係合爪部５５Ｅで曜伝え車歯車部２４Ｂの隣接する歯２３ＢによるＭ１方向回転力を受けてＰ２方向に回動され、小曜ジャンパ５０Ｅの躍制爪部５２Ｅが小曜車４０Ｂの小曜車歯車部４１Ｂ（の爪車部４５Ｂ）に対する規正を解除する。なお、曜ジャンパ２６Ｅがジャンプ動作の後で曜伝え車２０Ｂの再規正を完了するときには、小曜ジャンパ５０Ｅの躍制爪部５２Ｅも小曜車爪車部４５Ｂに対して規正位置に戻り、小曜ジャンパ５０Ｅの被係合爪部５５Ｅが、曜伝え車歯車部２４Ｂの歯部２３Ｂと実際上干渉しない位置を採る（典型的には、曜ジャンパ２６Ｅによる曜伝え車歯車部２４Ｂの規正の完了前に小曜ジャンパ５０Ｅによる小曜車４０Ｂの再規正が完了している）。   In the retrograde day display mechanism 1E equipped with the day jumper 26E and the small day jumper 50E, the day turning pawl 72B of the day turning wheel 70B is adjacent to the day transmitting wheel gear portion 24B when approaching the end of each day (one day). The day transmitting wheel gear portion 24B is engaged with the tooth 23B to be rotated and rotated in the M1 direction by one tooth. At this time, according to the rotation in the M1 direction of the day transmission wheel gear portion 24B of the day transmission wheel 20B, on the one hand, the day jumper 26E jumps to the tooth portion 23B of the day transmission wheel gear portion 24B, and on the other hand The small day jumper 50E receives the rotational force in the M1 direction from the adjacent teeth 23B of the day transmitting wheel gear part 24B at the engaged claw part 55E and is rotated in the P2 direction, and the jumping claw part 52E of the small day jumper 50E is rotated. The regulation for the small day wheel gear portion 41B (the claw wheel portion 45B) of the small day wheel 40B is released. When the day jumper 26E completes the re-setting of the day transmission wheel 20B after the jump operation, the jumping claw portion 52E of the small day jumper 50E also returns to the setting position with respect to the small day wheel claw wheel portion 45B. The engaged claw portion 55E of the day jumper 50E takes a position that does not actually interfere with the tooth portion 23B of the day transmission wheel gear portion 24B (typically, completion of the regulation of the day transmission wheel gear portion 24B by the day jumper 26E). Previously, re-calibration of the small day wheel 40B by the small day jumper 50E has been completed).

その後、図５のレトログラード式曜表示機構１Ｂの場合と同様に、前述のような動作が繰り返され、この図７のレトログラード式曜表示機構１Ｅにおいても、図５のレトログラード式曜表示機構１Ｂと同様に、小曜針１０が文字板１６Ｂの扇形の曜表示部８において、所定位置に正確に位置決めされて曜表示が行われ得ることになる。   Thereafter, the operation as described above is repeated as in the case of the retrograde day display mechanism 1B in FIG. 5, and the retrograde day display mechanism 1E in FIG. 7 is the same as the retrograde day display mechanism 1B in FIG. In addition, the small day hand 10 can be accurately positioned at a predetermined position in the sector day display portion 8 of the dial 16B and the day display can be performed.

週末において土曜日から日曜日に移る際には、曜伝え車２０ＢのＭ１方向回転に伴い、小曜ジャンパ５０Ｅが、被係合部５５Ｅで、規制解除手段としての曜伝え車２０Ｂの曜伝え歯車部２４Ｂの歯部２３ＢからＰ２方向回動力を受け、該小曜ジャンパ５０Ｅの躍制爪部５２ＥがＰ２方向に回動されて小曜車爪車部４５Ｂの回転規正を解除し、小曜車４０Ｂが回転自在になる。従って、週末において土曜日から日曜日に移る際に曜伝え車２０ＢのＭ１方向回転に伴い、復針レバー６０Ｂのカム従節をなす腕部６１Ｂの先端部が曜伝え車２０Ｂのカム部３０Ｂの最大径部３９ａに達しこれを過ぎると、復針レバー６０Ｂが復針レバー戻しばね６９Ｂの作用下で、最小径部３９ｂに落ちる。すなわち、復針レバー６０Ｂが復針レバー戻しばね６９Ｂの作用下で中心軸線ＮのまわりでＮ２方向に回動され、歯車部６４Ｂ，４１Ｂの噛合を介して小曜車４０ＢがＧ２方向に回転され、小曜針１０が土曜日（Ｓａｔ）を指すＧ１方向端位置から日曜日（Ｓｕｎ）を指すＧ２方向端位置に戻るレトログラード動作が行われる。   When the weekend shifts from Saturday to Sunday, the small day jumper 50E is engaged by the engaged portion 55E with the rotation of the day transmitting wheel 20B in the M1 direction, and the day transmitting gear portion 24B of the day transmitting wheel 20B as the restriction releasing means. P2 direction turning force is received from the tooth portion 23B, the jumping claw portion 52E of the small day jumper 50E is rotated in the P2 direction to release the rotational regulation of the small day wheel claw wheel portion 45B, and the small day wheel 40B It becomes free to rotate. Accordingly, when the day transmission wheel 20B rotates in the M1 direction on the weekend from Saturday to Sunday, the tip of the arm portion 61B that forms the cam follower of the hammer 60B is the maximum diameter of the cam portion 30B of the day transmission wheel 20B. When the portion 39a is reached and passed, the hammer 60B falls to the minimum diameter portion 39b under the action of the hammer return spring 69B. In other words, the hammer 60B is rotated in the N2 direction around the central axis N under the action of the hammer return spring 69B, and the small day wheel 40B is rotated in the G2 direction through the meshing of the gear portions 64B and 41B. A retrograde operation is performed in which the small day hand 10 returns from the G1 direction end position indicating Saturday (Sat) to the G2 direction end position indicating Sunday (Sun).

１，１Ａ レトログラード式ビッグデイト表示機構（レトログラード表示機構）
１Ｂ，１Ｅ レトログラード式曜表示機構（レトログラード表示機構）
７，７Ａ，７Ｂ，７Ｅ 時計
８ レトログラード式曜表示部
９Ｈ 時分表示部
９Ｍ 日付表示部
９Ｓ 小秒表示部
９Ｔ ２４時表示部
１０ 小曜針（曜表示針）
１１ 時針
１２ 分針
１３ 秒針
１３Ｂ 小秒針
１４ 巻真
１５ リューズ
１６，１６Ｂ 文字板
１７ 日窓
１７Ｂ 日針
１８ ２４時間針
１９ 地板（支持基板）
２０ 第一日車（時値伝え車）
２０Ｂ 曜伝え車（時値伝え車）
２１ 第一日付表示面部
２２ 第一日車本体部
２３ 内歯
２３Ｂ 歯
２４ 第一日車歯車部（時値伝え歯車部）
２４Ｂ 曜伝え歯車部（時値伝え歯車部）
２５ 環状板状部
２６，２６Ａ 第一日ジャンパ
２６Ｂ，２６Ｅ 曜ジャンパ
２７，２７Ａ，２７Ｂ，２７Ｅ ジャンパ本体部
２７ａ 係合突起部
２７ａＢ 係合突起部
２８，２８Ａ，２８Ｂ，２８Ｅ 躍制爪部
２９ 第一日ジャンパばね
２９Ｂ 曜ジャンパ加圧ばね
３０ 駆動カム部
３０Ｂ 曜伝え車カム部（駆動カム部）
３１ 第一カム円弧部
３２ 第二カム円弧部
３３ 第三カム円弧部
３４ 第四カム円弧部
３５，３６，３７ 接続傾斜面
３８，３８Ｂ 遷移面（遷移部）
３９ 主カム面部
３９ａ 最大径部
３９ｂ 最小径部
４０ 第二日車（扇様車）
４０Ｂ 小曜車（扇様車）
４１ 第二日車歯車部（扇様車歯車部）
４１Ｂ 小曜車歯車部（扇様車歯車部）
４２ 第二日板部
４２ａ，４２ｂ 境界（仮想線）
４３ 第二日付表示面部
４５ 第二日車爪車部
４５Ｂ 小曜車爪車部
４６ 爪部
５０，５０Ａ 第二日ジャンパ（扇様車ジャンパ）
５０Ｂ，５０Ｅ 小曜ジャンパ（扇様車ジャンパ）
５１，５１Ａ 第二日ジャンパ本体部
５１Ｂ，５１Ｅ 腕部
５２，５２Ａ，５２Ｂ，５２Ｅ 躍制爪部
５３，５３Ａ，５３Ｂ，５３Ｅ 腕部
５４ 係合突起部
５４Ｂ，５４Ｅ 被係合部
５５ 被係合爪部
５９ 第二日ジャンパばね
５９Ｂ，５９Ｅ 小曜ジャンパばね
６０ 第二日車作動レバー（扇様車作動レバー）
６０Ｂ 復針レバー（扇様車作動レバー）
６１，６１Ｂ 腕部（カム従節）
６２，６２Ｂ 腕部
６３，６３Ｂ 先端部
６４ 第二日車作動歯車部（扇様車作動歯車部）
６４Ｂ 小曜車作動歯車部（扇様車作動歯車部）
６４ａ，６４ｂ，６４ｃ，６４ｄ 歯部
６５ 小間隙
６９ 作動レバーばね
６９Ｂ 復針レバー戻しばね
７０ 日回し車（時値回し車）
７０Ｂ 曜回し車（時値回し車）
７１ 日回し歯車
７１Ｂ 曜回し歯車
７２ 日回し爪
７２Ｂ 曜回し爪
７３ 伝え車
Ａ１，Ｃ１，Ｌ１，Ｍ１ 回転方向
ＢＤ１ 第一日付文字
ＢＤ２ 第二日付文字
Ｃ，Ｄ，ＤＡ，Ｅ，Ｆ，ＦＡ，Ｇ，Ｈ，Ｊ，Ｋ，Ｌ，Ｍ，Ｎ，Ｐ，ＰＥ，Ｑ 中心軸線
Ｄ１，Ｄ２，Ｅ１，Ｅ２，Ｆ１，Ｆ２，Ｇ１，Ｇ２，Ｎ１，Ｎ２，Ｐ１，Ｐ２，Ｑ１，Ｑ２ 回動方向
Ｍ２，Ｔ 方向 1,1A Retrograde Big Date Display Mechanism (Retrograde Display Mechanism)
1B, 1E Retrograde day display mechanism (retrograde display mechanism)
7, 7A, 7B, 7E Clock 8 Retrograde day display unit 9H Hour / minute display unit 9M Date display unit 9S Small second display unit 9T 24:00 display unit 10 Small day hand (day display hand)
11 hour hand 12 minute hand 13 second hand 13B small second hand 14 winding stem 15 crown 16, 16B dial 17 date window 17B date hand 18 24-hour hand 19 main plate (support substrate)
20 First day car (time value transmission car)
20B Day transmission car (hour transmission car)
21 First date display surface portion 22 First date wheel main body portion 23 Internal tooth 23B Tooth 24 First date wheel gear portion (hour value transmission gear portion)
24B Day transmission gear (hour value transmission gear)
25 annular plate-like portion 26, 26A first day jumper 26B, 26E day jumper 27, 27A, 27B, 27E jumper body 27a engaging projection 27aB engaging projection 28, 28A, 28B, 28E jumping claw 29 Day jumper spring 29B Day jumper pressurizing spring 30 Drive cam part 30B Day transmission wheel cam part (drive cam part)
31 1st cam circular arc part 32 2nd cam circular arc part 33 3rd cam circular arc part 34 4th cam circular arc part 35,36,37 Connection inclined surface 38,38B Transition surface (transition part)
39 Main cam surface portion 39a Maximum diameter portion 39b Minimum diameter portion 40 Second date wheel (fan-like wheel)
40B Small car (fan-like car)
41 Second date gear (fan gear)
41B small day wheel gear (fan gear)
42 2nd date board part 42a, 42b boundary (imaginary line)
43 2nd date display surface part 45 2nd date claw wheel part 45B Small day wheel claw wheel part 46 Claw part 50, 50A 2nd day jumper (fan-like car jumper)
50B, 50E Koyo Jumper (fan-like car jumper)
51, 51A 2nd day jumper main body 51B, 51E Arm 52, 52A, 52B, 52E Jumping pawl 53, 53A, 53B, 53E Arm 54 Engaging protrusion 54B, 54E Engaged 55 Engaged Claw 59 Second day jumper spring 59B, 59E Small day jumper spring 60 Second day wheel operating lever (fan-like car operating lever)
60B Return lever (operating lever)
61, 61B Arm (cam follower)
62, 62B Arm portion 63, 63B Tip portion 64 Second date indicator operating gear portion (fan-like vehicle operating gear portion)
64B small day wheel operating gear part (fan-like car operating gear part)
64a, 64b, 64c, 64d Tooth portion 65 Small gap 69 Actuating lever spring 69B Return lever return spring 70 Date turning wheel (hour value turning wheel)
70B Day turning car (hour value turning car)
71 Date turning gear 71B Day turning gear 72 Day turning claw 72B Day turning claw 73 Transmission wheel A1, C1, L1, M1 Rotating direction BD1 First date letter BD2 Second date letter C, D, DA, E, F, FA, G, H, J, K, L, M, N, P, PE, Q Center axis D1, D2, E1, E2, F1, F2, G1, G2, N1, N2, P1, P2, Q1, Q2 Direction M2, T direction

Claims (10)

日又は曜からなる時値について該時値を進める時値回し歯車及び時値回し爪を備え一日に一回転される時値回し車と、該時値回し車の時値回し爪によって一日に一歯分だけ回転される時値伝え歯車部及び駆動カム部を備えた時値伝え車と、時値伝え車の駆動カム部に弾性的に押付けられて該駆動カム部と係合するカム従節部および扇様車作動歯車部を備えた扇様車作動レバーと、該扇様車作動レバーの扇様車作動歯車部に噛合し該扇様車作動レバーの揺動に応じて回転される扇様車歯車部及び扇様車表示部を備えた扇様車とを有し、月末又は週末を過ぎる毎に該扇様車が逆向きに急転されて初期位置に戻るように構成されたレトログラード表示機構本体と、
扇様車の扇様車歯車部を躍制する扇様車ジャンパと、
月末又は週末を過ぎる毎に、扇様車ジャンパによる規正を解除する規正解除手段と
を有してなるレトログラード表示機構。 The hour value wheel which advances the hour value with respect to the hour value consisting of a day or day of the week, and a hour wheel which is rotated once a day with the hour wheel and hour wheel, and the hour wheel of the hour wheel A time value transmission wheel provided with a time value transmission gear portion and a drive cam portion, and a cam that is elastically pressed against the drive cam portion of the time value transmission wheel and engages with the drive cam portion A fan-shaped car operating lever provided with a follower section and a fan-shaped car operating gear section, and meshed with the fan-shaped car operating gear section of the fan-shaped car operating lever and rotated according to the swing of the fan-shaped car operating lever. And a fan wheel provided with a fan wheel display and a fan wheel display unit, each time the end of the month or weekend, the fan wheel is suddenly turned in the reverse direction and returned to the initial position. Retrograde display mechanism body,
A fan-like car jumper that controls the fan-wheel gear of the fan car,
A retrograde display mechanism comprising a regulation release means for releasing regulation by a fan-like car jumper at the end of a month or weekend. 前記時値が日からなり、前記時値回し車が日回し車からなり、
前記時値伝え車が１の位の日付を表示する第一日板部を備えた第一日車からなり、
前記扇様車作動レバーが第二日車作動レバーからなり、
前記扇様車が１０の位を表示する第二日車からなり、前記扇様車歯車部が第二日表示車からなり、
前記扇様車ジャンパが第二日ジャンパからなり、
日回し歯車及び日回し爪を備え一日に一回転される日回し車と、該日回し車の日回し爪によって一日に一歯分だけ回転される第一日車歯車部及び駆動カム部を備えた第一日車と、第一日車の駆動カム部に弾性的に押付けられて該駆動カム部と係合するカム従節部および第二日車作動歯車部を備えた第二日車作動レバーと、該第二日車作動レバーの第二日車作動歯車部に噛合し該作動レバーの揺動に応じて回転される第二日表示車及び第二日板部を備えた第二日車とを有し、月末を過ぎる毎に該第二日車が逆向きに急転されて初期位置に戻るように構成されたレトログラード表示機構本体と、
第二日車の第二日表示車を躍制する第二日ジャンパと、
月末を過ぎる毎に、第二日ジャンパによる規正を解除する規正解除手段と
を有してなる
請求項１に記載のレトログラード表示機構。 The hour value consists of a day, the hour value turning car consists of a date turning car,
The hour value transmission wheel comprises a first date wheel provided with a first date plate portion for displaying a date of a one's place,
The fan wheel operating lever comprises a second date indicator operating lever,
The fan wheel is composed of a second date indicator that displays the 10th place, the fan wheel gear part is composed of a second date indicator wheel,
The fan-like car jumper is a second day jumper,
A date driving wheel provided with a date driving wheel and a date driving claw and rotated once a day, and a first date wheel gear unit and a drive cam unit rotated by one tooth per day by the date driving claw of the date driving wheel A second date provided with a second date indicator operating gear portion and a cam follower portion that is elastically pressed against the drive cam portion of the first date indicator and engages with the drive cam portion A vehicle operating lever, a second date indicator wheel which meshes with a second date indicator operating gear portion of the second date indicator operating lever and rotates according to the swing of the operating lever, and a second date plate portion. A retrograde display mechanism main body configured to have a two-day wheel and be configured so that the second date wheel suddenly reverses and returns to the initial position every time the end of the month is passed,
The second day jumper that dominates the second day display car of the second day car,
The retrograde display mechanism according to claim 1, further comprising a regulation release means for releasing the regulation by the second day jumper every time the month ends. 規正解除手段は、第一日車が一日分回転する毎に、第二日ジャンパによる規正を解除するように構成されている請求項２に記載のレトログラード表示機構。   The retrograde display mechanism according to claim 2, wherein the regulation release means is configured to release the regulation by the second date jumper every time the first date indicator rotates for one day. 第一日歯車部を躍制する第一日ジャンパを備え、該第一日ジャンパは、第一日車が一日分回転して第一日車歯車部の歯を乗り越える際に、第二日ジャンパによる第二日表示車の規正を解除させるべく第二日ジャンパを変位させるように構成されている請求項３に記載のレトログラード表示機構。   The first day jumper is provided with a first day jumper for controlling the first day gear part. The retrograde display mechanism according to claim 3, wherein the second day jumper is displaced so as to cancel the regulation of the second day display vehicle by the jumper. 第二日ジャンパが第一日車歯車部と係合する第一日車係合部を備え、第一日車が一日分回転する際に、第二日ジャンパは、第一日車係合部を介して変位されて第二日表示車の規正を解除するように構成されている請求項３に記載のレトログラード表示機構。   The second date jumper includes a first date indicator engaging portion that engages with the first date indicator gear portion, and the second date jumper engages with the first date indicator when the first date indicator rotates for one day. The retrograde display mechanism according to claim 3, wherein the retrograde display mechanism is configured to release the regulation of the second date indicator wheel by being displaced through the portion. 前記時値が曜からなり、前記時値回し車が曜回し車からなり、
前記時値伝え車が曜回し車からなり、
前記扇様車作動レバーが復針レバーからなり、
前記扇様車が小曜車からなり、前記扇様車歯車部が小曜歯車からなり、
前記扇様車ジャンパが小曜ジャンパからなり、
曜回し歯車及び曜回し爪を備え一日に一回転される曜回し車と、該曜回し車の曜回し爪によって一日に一歯分だけ回転される曜伝え歯車及び駆動カム部を備えた曜伝え車と、曜伝え車の駆動カム部に弾性的に押付けられて該駆動カム部と係合するカム従節部および小曜車作動歯車部を備えた復針レバーと、該復針レバーの小曜車作動歯車部に噛合し該復針レバーの揺動に応じて回転される小曜歯車及び小曜針を備えた小曜車とを有し、週末を過ぎる毎に該小曜車が逆向きに急転されて初期位置に戻るように構成されたレトログラード表示機構本体と、
小曜車の小曜歯車を躍制する小曜ジャンパと、
週末を過ぎる毎に、小曜ジャンパによる規正を解除する規正解除手段と
を有してなる請求項１から５までのいずれか一つの項に記載のレトログラード表示機構。 The hour value consists of the day of the week, the hour value turning car consists of the day turning wheel,
The time signal car consists of a day-turning car,
The fan wheel operating lever comprises a hammer,
The fan wheel is a small day wheel, the fan wheel is a small day gear,
The fan-like car jumper is a small day jumper,
A day-turning wheel equipped with a day-turning gear and a day-turning claw, and a day-turning wheel rotated once per day by the day-turning claw of the day-turning car A day transmission wheel, a hammer lever elastically pressed against a drive cam portion of the day transmission wheel and engaged with the drive cam portion, and a small day wheel operating gear portion, and the hammer lever A small day wheel having a small day wheel and a small day wheel having a small day hand which are rotated according to the swing of the hammer, and each small day wheel is passed. Retrograde display mechanism body configured to suddenly rotate in the reverse direction and return to the initial position,
With a small jumper jumping the small day gear of the small day car,
6. The retrograde display mechanism according to any one of claims 1 to 5, further comprising a regulation canceling unit that cancels the regulation by the small day jumper every weekend. 規正解除手段は、曜伝え車が一日分回転する毎に、小曜ジャンパによる規正を解除するように構成されている請求項６に記載のレトログラード表示機構。   7. The retrograde display mechanism according to claim 6, wherein the regulation release means is configured to release the regulation by the small day jumper every time the day transmission wheel rotates for one day. 曜伝え歯車部を躍制する曜ジャンパを備え、該曜ジャンパは、曜伝え車が一日分回転して曜伝え歯車部の歯を乗り越える際に、小曜ジャンパによる小曜歯車の規正を解除させるべく小曜ジャンパを変位させるように構成されている請求項７に記載のレトログラード表示機構。   The day jumper is equipped with a day jumper that controls the day transmission gear. The day jumper cancels the small day gear setting by the small day jumper when the day transmission wheel rotates one day and gets over the teeth of the day transmission gear. 8. The retrograde display mechanism according to claim 7, wherein the retrograde display mechanism is configured to displace the small day jumper. 小曜ジャンパが曜伝え歯車部と係合する曜伝え歯車係合部を備え、曜伝え歯車が一日分回転する際に、小曜ジャンパは、曜伝え歯車係合部を介して変位されて小曜歯車の規正を解除するように構成されている請求項７に記載のレトログラード表示機構。   The small day jumper includes a day transmission gear engaging portion that engages with the day transmission gear portion. When the day transmission gear rotates for one day, the small day jumper is displaced via the day transmission gear engagement portion. The retrograde display mechanism according to claim 7, wherein the retrograde display mechanism is configured to cancel the regulation of the small day gear. 請求項１から９までのいずれか一つの項に記載のレトログラード表示機構を具備する時計。   A timepiece comprising the retrograde display mechanism according to any one of claims 1 to 9.
JP2011054884A 2011-03-13 2011-03-13 Retrograde display mechanism and watch equipped with the same Active JP5715453B2 (en)

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CN201210064108.8A CN102681423B (en) 2011-03-13 2012-03-12 The inverse clock and watch jumped indication mechanism and possess this inverse jumping indication mechanism
CH00350/12A CH705041B1 (en) 2011-03-13 2012-03-12 Retrograde display mechanism and timepiece comprising such a mechanism.
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